The list is an assemblage from many different languages. To keep all abbreviations distinct, some counterintuitive abbreviations had to be forged (a few conflicts have been preserved, though). Since any given language will need only a small subset from the list, abbreviations can then be streamlined.

valueabbrev.categorycomment
1st person1person
2nd person2person
3rd person3person
abessive(prv)
(avers)
use 'privative' and 'aversive'
abilitative(hab)use 'habilitative'
ablativeabllocal case relator'from' (= separative)
absoluteabslnominalfree non-incorporated form of noun
absolutiveabsgrammatical case or pronominal index slotin ergative system
abstractabstrnominal
accusativeaccgrammatical case relator
acrossacrsspatial demonstrative'same level'
action nominalizeracnnrdeverbal nominal derivation
activeactvoice
actorapronominal index slotnot known as a case in 2017
actor topicatopvoice
additive, -ionaladdcase relator
addressee-honorific2honhonorification
addressee-humble2hmlhonorification
adelativeadellocal case relator
adessiveadesslocal case relator
adhortative(hort)use 'hortative'
aditive(all)use 'allative'
adjectiv(al)izeradjrderivational or syntactic
admonitiveadmmood
adverbializeradvrderivational or syntactic
adversativeadrvsinterpropositional relation'whereas'
affirmativeaff(mt)opposite to negativenormally unmarked
agent nominalizeragnrdeverbal nominal derivation
agentiveag
alienablealpossessive attribution morpheme
allativealllocal case relator'to'
allocutiveallochonorificationkind of addressee-honorific
ambientambderivationalweather, time, environment
ambulativeambvverbal
anaphoricanapronominal
andativeanddeictic
animatean
antepresentatpverbalonly if distinct from 'perfect'
anterioranttenserelative tense
anticausativeacausdeverbal verb derivation= deagentive, blocking of actor argument
antipassiveapassvoice
aoristaortense-aspectperfective past (as opposed to imperfect)
applicativeappldeverbal verb derivationsubtypes may be distinguished by appl.rec, appl.inst etc.
apprehensionalapp(r)hinterpropositional relation'lest'
approbativeapp(r)billocutionary formativeapproval to what is said
approximativeapp(r)xverbaldistinct from paenitive
apudessive, -lativeapudonly if distinct from adessive/-lative
ascensiveascverbalupward movement
assertiveasrtmodalitysubtype of declarative: high degree of commitment
associativeass(oc)adnominal case relator'with, à'
associated andativeass.andverbal'go Ving, go to V, V on the way there'
associated ventiveass.venverbal'come Ving, come to V, V on the way here'
assumptiveassumevidential
attentionalattnimperative
attenuativeatt(v)verbal or adjectival derivation
attributoratnominallinks an attribute to the head
audibleauddemonstrative
auditoryaudevidential≠ 'hearsay'
augmentativeaugdenominal nominal derivation
authenticauthnominal or adjectival
autonomous motionamverbal
auxiliaryauxif it is the only auxiliary root
aversiveaverscase relatoronly if distinct from 'ablative' and 'privative'
backgroundbgaspectonly if distinct from imperfective
benefactivebencase relator'for'
cardinalcardnumeralif marked grammatically
caritive(prv)use 'privative'
catalyticcatderivationalsubmorphemic unit enabling another operation
causativecausdeverbal verb derivation
certitivecertmodal category
change of stateCOSaspectual
circumstantialcircinterpropositional relation'in, by'
clamative(excl)use 'exclamative'
class #cl#noun class ## for numbers; specific labels otherwise
classifierclfnominalfollowed by class identifier, e.g. hum
cohortative(hort)use 'hortative'
collectivecoll
comitativecomcase relator'with, in the company of'
commonc(om)mgendereither masc. or fem.; cf. 'human' and 'animate'
comparativecmprdegree of comparison
complementizercompsubordinator= sr
completivecmplaspectonly if distinct from perfective
compoundercmpjmarker of incorporation joint
conativecntvmood
concessiveconcinterpropositional relation'although'
concretecncrpronominal
conditionalcond1) interpropositional relation;
2) mood
1) 'if';
2) 'would'
conductivecndvcase relator'taking X with oneself'
conjecturalconjcevidential
conjunctiveconjinterpropositional relationof non-finite predicate
connector, -iveconnif there is only one
consecutiveconsecinterpropositional relation'so that'
constructconstnominalconstruct state
converb(ger)use 'gerund'
continuativecontaspect/aktionsart
copulacopif there is only one
counterfactual(irr)mooduse 'irrealis'
crastinalcrastense'tomorrow'
culminativeclmverbal'end up / get as far as'
customary(hab)aspectualuse 'habitual'
dativedatgrammatical case relator
deagentive(acaus)use 'anticausative'
debitivedebmood, hyperonym of 'obligative'
declarativedeclsentence-typenormally unmarked
deferentialdefrhonorification~ speaker-humble
definitedefdetermination
deictic of 12 persond12demonstrative
deictic of 1st persond1demonstrative
deictic of 2nd persond2demonstrative
deictic of 3rd persond3demonstrative
delativedellocal case relator'down from'
demonstrativedemdeterminationaccompanied by specific feature
dependent verb form(subj)use 'subjunctive'
derelationalizerderelnominal
descensivedescverbaldownward movement
desiderativedesverbal
destinativedestlocal case or directional ‘up to goal’
if typically for human destinations, use 'benefactive';
if on non-finite verb form which itself represents the goal, use 'supine'
determinerdetpronominalwill normally be def, indef, gnr, spec, nspec
detransitivizerdetrdeverbal verb derivationsee also 'anticausative' and 'introversive'
different subjectds
diminutivedimdenominal noun derivation
directdrvoicevs. inverse
direct evidentialdirevevidential
direct objectdopronominal index slot
directionaldircase or verb derivation(if there is only one:) 'towards'; use and and ven for deictic directionals
directivedirvmodal
dishabilitativedishab
disjunctivedisj
dissociativedissoc
distaldistdemonstrativeremote from deictic center
distributivedistrnominal or verbal
donativedonauxiliary of benefactive construction
down(wards)infraspatial demonstrative
dualdu, dlnumber
dual exclusivedenumber
dual inclusivedinumber
dubitativedubmood
durativeduraktionsart
dynamicdynaktionsartvs. stative
egressiveegraktionsart
elativeelatlocal case relator'out of'
elongatedelongclassifier
emotiveemot
emphasizer/emphaticemph1) information structure marker; 2) pronominal
equativeeqt1. case;
2. predicative
'as';
feature/marker of adjective in nominal clause
ergativeerggrammatical case or pronominal index slotin ergative system
essiveesscase relator'as'; see also 'transformative'
euphoniceu
evidentialevidverbalif there is only one
exclamativeexclmood
exclusive(de, pe)use 'dual exclusive', 'plural exclusive'
exist(ential)existgrammatical verb
experientialexperaspect
extensiveext
extrafocalexfocverbalstatus of subordinate clause of cleft-sentence
extraversiveextrvdeverbal verb derivationtransitivization by addition of undergoer
factitivefactdenominal/deadjectival verb derivationA-fact NP 'make NP A'
familiarfampronominalif distinct from 'definite'
femininefgender
finalfin1) aspect; 2) = purposive1: only if distinct from 'perfective' and 'completive'
finitefinverbal
first person dual inclusive12if treated as a quasi-singular; otherwise 'dual inclusive'
flatplanclassifier
focusfocinformation structure
formalfrmmood
frequentativefreqaktionsartmultiple times on several occasions
futurefuttense
genericgnrdetermination
genitivegengrammatical case relator
gerundgerverbalverbal adverb or converb
gerundive(deb)use 'debitive'
goalgpronominal index slotonly if distinct from io; case is 'allative'
habilitativehabilmodal
habitualhab(it)aktionsart~ customary
habitual-genericuse 'habitual', 'generic'
habitual-pastuse 'habitual', 'past'
hearsayhsevidential≠ 'auditory'
hesitativehesitinformation structure
hesternalhesttenseyesterday's past
hodiernal futurehodfuttensetoday's future
hodiernal pasthodpsttensetoday's past
honorifichonhonorification
horizontalhorpositional
hortativehortmood1st person imperative
humanhum
humblehmlhonorificationcomprises 'speaker-humble, addressee-humble, referent-humble'
hypocoristichcraffect
hypotheticalhypmood
illativeilllocal case relator'into'
immediativeimmaspect
immediate/imminent futureimmfuttense
immediate past(recpst)use 'recent past'
imperativeimpmood
imperceptibleimpcdemonstrative
imperfectimpftense-aspectimperfective past; vs. aorist
imperfectiveipfvaspect
impersonalimprpronominalonly if formally distinct from the specific persons
impersonal passiveipsvoicepassive without promotion to subject
inactiveinactgrammatical case or pronominal index slotin active system
inalienableinalnominalpossessive attribution morpheme or feature
inanimateinan
inceptive(ingr)use 'ingressive'
inchoativeinchdenominal verbal derivationN/A-inch 'become N/A'
inclusive(di, pi)use 'dual inclusive', 'plural inclusive'
incompletive, noncompletiveincmp(l)aspectnormally = imperfective
inconsequentialinconsinterpropositional relation
incorporativeincjmarker of incorporation joint
indefiniteindfdetermination
independentindepmoodonly if distinct from indicative
indicativeindmood
indirect interrogativeindintclause type
indirect objectiopronominal index slot
inessiveinesslocal case relator'inside'
inferentialinfrmood or evidential
infinitiveinfverbal
ingressiveingraktionsart
initializerinitrinformation structureonly if distinct from hes
injunctiveinjmood
instructive(man)use 'manner'
instrument nominalizerinstnrdeverbal nominal derivation
instrumentalinst(r)case relator
intensiveintsverbaloften aktionsart
intentionalintl
interrogativeintsentence typeparticle or morphological category
intransitiveintrverbalmorpheme or grammatical category
intransitive subjectspronominal index slotonly if distinct from both a and p; use sbj otherwise
introversiveintrvdeverbal verb derivationblocking of undergoer argument
inverseinvusually verbalvs. direct
invisibleinvsdemonstrative
involitiveinvolverbal categoryonly if distinct from nvol
irrealisirrmood
iterativeiteraktionsartseveral times on one occasion
jussivejussmood3rd ps. imperative or dependent mood
lativelatlocal case relator'to ~ from ~ via'
ligaturelignominal
limitativelim'only'
linkerlnknominallinks subconstituents of a phrase, typically an NP; properly includes 'attributor'
locativeloclocal case relator
locative topicltopvoice
logophoriclogpronominal or verbal
malefactivemaldeverbal verb derivation
mannermancase relatoralso on non-finite verbs
manner nominalizermannrdeverbal nominal derivation
masculinemgender
masculine personalmhumgender
medialmeddemonstrativemedial distance from deictic center
medialmedvverbalverb form in a chain
mediativemedtcase relator'between, among; by means of'
mediopassivemedpvoice
middlemidvoiceexcludes passive
mirativemirverbal or sentence type'surprise'
motivativemtvcase relator'by'; sometimes called 'causal'
multiple actionmult
multiplicativemulvnumeral
narrativenarrtense
nativizerntvrderivationconverts loans into a native category
near futurenrfuttenseafter 'immediate future'
negativeneg
neuterngender
neutralntlin contrast with other members of the paradigm, e.g. positional
nominalizernrdeverbal nominal derivation or syntactic subordinationsee also the more specific ones
nominativenomgrammatical case relator
non-ne.g. npst
non-finitenfinverbalinflectional counterpart of NR & GER
non-futurenfuttense
non-humannhumgender
non-masculine personalnmgender
non-pastnpsttense
non-pluralnplnumber< 3
non-singularnsgnumber> 1; only if there is a plural for > 2
non-specificnspecdetermination
non-visualnvisevidentialnon-eye-witness
non-volitionalnvolverbal
noun class #cl#noun class ## is a number or a feature
numeralnumpronominalsubcategory
objectobjpronominal index slot
obligativeoblgmood, hyponym of 'debitive'
obliqueoblcase relator
obviative obvpersonvs. proximate
open containerocclassifier
optative optmood
ordinalordnumeral
paenitivepaenverbal'almost'
partial affectednessprlverbal
participleptcpverbalas a marker, not as a conjugation form
partitiveprtvcase relator
passivepassvoice
pastpsttense
patient nominalizerpatnrdeverbal nominal derivation
paucalpaunumber
pejorativepejaffect
perfectp(r)ftense-aspect
perfectivepfvaspect
pergressive(perl)use 'perlative'
perlativeperllocal case relator'through'
permanentperm
person(al)pspronominal
place nominalizerlocnrdeverbal nominal derivation
pluperfectpluptensepast or perfect of a past
plural plnumber
plural exclusivepenumber
plural inclusivepi number
plural objectploverbalclass of classificatory verb
pluritive(pl)plural of a singulative; use 'plural'
polite(frm)use 'formal'
portativeport
positionalposverbal
positive(aff)use 'affirmative'
possessed(rel)use 'relational'
possessiveposspossessive determiner, pronoun and pronominal index slotuse gen, at, prt or pry otherwise
possessive classifierpclfollowed by specific class feature
postcrastinalpocrastensefuture after tomorrow
postelativepostellocal case relator'from behind'
posteriorpostrelative tense
postessivepostesslocal case relator'behind'
post-hodiernalpohodtensefuture after today
potentialpotmood
precativeprecmoodfor requesting
predicativeprednominalpredicative form
presentprstense
presumptiveprsmtmood/evidentialtypically a particle
preterite(pst)use 'past'
pre-hesternalprhesttensepast before yesterday
primary objectpopronominal index slot
privative pr(i)vcase relator'without'
processive, -ualprocdenominal verb derivation
product nominalizerprdnrdeverbal derivation
progressiveprogaspect
prohibitiveprohmoodnegative imperative
prolativeprolatlocal case relator'along, by (way of)'
proper nameprpnnominalmarker on proper names
propertyppynominaldummy possessum
proprietiveppvcase or denominal derivation'having, provided with'
prosecutiveproseccase relator'on from X'
prospectiveprosptense-aspect'going to'; opposite of perfect
proximalproxdemonstrativenear the deictic center
proximateprxpersonvs. obviative
proximative(paen)verbaluse 'paenitive'
punctualpnctaspect or aktionsart
purposive(dest)use 'destinative'
qualifierqulverbal
quality nominalizerqualnrdeverbal nominal derivation
question marker(int)use 'interrogative'
quotativequotmarking indirect speech
realisrlsmoodvs. irrealis
realizationrlz
recent pastrecpsttense= immediate past
reciprocalrcpvoice or pronominal
reconfirmativerecnf
reduplicativegloss by function
referent-honorific3honhonorification
referent-humble3hmlhonorification
referentialrftldeverbal nominal derivation
referentiverfvcase relator'about'
reflexiver(e)flvoice or pronominal
reinforcement(intns)use 'intensive'
relational(izer)rlrnominal
relativerelsubordinative and/or pronominalin relative clause
relative(rfr)use 'referentive'
remote(dist)demonstrativeuse 'distal'
remote pastrempsttense
repetitiverepaktionsartonly if distinct from iterative
reportativerprtevidential
restrictive(lim)use 'limitative'
resultativeresaspect or aktionsart
reversivervrsaktionsart
same subjectss
secondary objectsopronominal index slot
semelfactivesmlfaktionsart
sensorysensevidential
separative(abl)use 'ablative'
sequentialseqinterpropositional relationvs. simultaneous
similativesimvcase relator'as, like'
simultaneoussiminterpropositional relationvs. sequential
singularsgnumberrestricted
singulativesgtnominalvs. collective
sociativesocverbal'together'
speaker-honorific1honhonorification
speaker-humble1hmlhonorification
specificspecdetermination
speculativespeclevidential
sphericalspherclassifier'round object'
stativestataktionsart
subelativesubellocal case relator'from under'
subessivesubesslocal case relator'under'
subjectsbjpronominal index slot
subjunctive sbjvmood
sublativesubllocal case relator'to under'
subordinatorsrinterpropositional relationonly for the single universal subordinator ('that')
superdirective(supl)use super-lative
superelativesupellocal case relator'from above'
superessivesupesslocal case relator'above'
superficialsupf'on the surface'
superlativesupdegree of comparison
super-lativesupllocal case relator'to above'
supinesupnnon-finite verbal‘(in order) to V’
surprise(mir)use 'mirative'
tag questiontagsentence type
temporaltmpin combination with more specific features
temporarytempverbal'for a while'
terminativetermlocal case or aktionsart'up to'
timitive(apph)use 'apprehensional'
topic(alizer)topinformation structure
total affectednesstotverbal
transformativetrnsfcase relator'becoming N'; dynamic counterpart of essive
transitionaltrnl
transitivetrverbalmorpheme or grammatical category
transitive patientppronominal index slotonly if opposed to both s and a; use obj otherwise
transitive subjectapronominal index slotonly if opposed to both s and p; use erg otherwise
transitivizertrrdeverbal verb derivation
translativetrnsllocal case relator'across'
transportativetrpverbal'transporting X'
trialtrlnumberonly if distinct from paucal
undergoerupronominal index slot
undergoer topicutopvoice
unrestricted(pl)use 'plural'
unspecifiedunspecpersonunspecified argument of relational base
up(wards)supraspatial demonstrative
validatoruse 'assertive', 'declarative'
ven(i)tivevendeictic
verbal interrogativeintvonly if distinct from both int and indint
verbalizervr, vbzverb derivation
verticalvertpositional
visiblevisdemonstrative
visualvisevidentialeyewitness
vocativevoccase relator
volitional, volitivevolverbal
zeromaking no contribution to sentence meaning