kerti

/kerti/

As an adjective

Degrees

base formkertitrue
comparative — morekertirektruer
intensifier — verybek kertivery true
superlative — mostem kertithe truest

To compare two things, put the loser in the from-form: ol menden kertidi — "compared to me, he is true."

Saying it about someone

SingularPlural
1st personmen kertimeI am truebiz kertibizwe are true
2nd personsen kertiseyou are truesiz kertisizyou all are true
3rd personol kertidihe / she / it is trueala kertidilethey are true

Saying it about something

One thingSeveral
this / thesebu kertidithis is truebıla kertidilethese are true
that / thoseol kertidithat / it is trueala kertidilethose / they are true
minemeniki kertidimine is truemenikile kertidilemine are true
yoursseniki kertidiyours is truesenikile kertidileyours are true
oursbizniki kertidiours is truebiznikile kertidileours are true

As a noun

Cases

SingularPluralWhen to use it
nominativekertithe truthkertilethe truthsthe plain dictionary form — the doer of the sentence
genitivekertinithe truth'skertilenithe truths'the owner — whose it is
accusativekertinithe truth (as the object)kertilenithe truths (as the object)a specific, known object — whom or what
dativekertigeto the truthkertilegeto the truthsdirection or recipient — to where, to whom
locativekertideat / in the truthkertiledeat / in the truthswhere it is; also having — mende bar, "I have it"
ablativekertidenfrom the truthkertiledenfrom the truthswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
mykertimmy truthkertilerimmy truths
yourkertingyour truthkertileringyour truths
his / herkertisihis / her truthkertilerihis / her truths
ourkertibizour truthkertileribizour truths
you all'skertigizyou all's truthkertilerigizyou all's truths
theirkertileritheir truthkertileritheir truths

The overlap in the last rows is real, not a mistake: kertileri can mean "his / her truths", "their truth", or "their truths" — context decides.