açıwçu

/ atʃɯwtʃu /

Cases

SingularPluralWhen to use it
nominative açıwçu the one who hurts açıwçula the one who hurtses the plain dictionary form — the doer of the sentence
genitive açıwçunu the one who hurts' açıwçulanı the one who hurtses' the owner — whose it is
accusative açıwçunu the one who hurts (as the object) açıwçulanı the one who hurtses (as the object) a specific, known object — whom or what
dative açıwçuğa to the one who hurts açıwçulağa to the one who hurtses direction or recipient — to where, to whom
locative açıwçuda at / in the one who hurts açıwçulada at / in the one who hurtses where it is; also having — mende bar, "I have it"
ablative açıwçudan from the one who hurts açıwçuladan from the one who hurtses 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
my açıwçum my one who hurts açıwçularım my one who hurtses
your açıwçuŋ your one who hurts açıwçularıŋ your one who hurtses
his / her açıwçusu his / her one who hurts açıwçuları his / her one who hurtses
our açıwçubuz our one who hurts açıwçularıbız our one who hurtses
you all's açıwçuğuz you all's one who hurts açıwçularığız you all's one who hurtses
their açıwçuları their one who hurts açıwçuları their one who hurtses

The overlap in the last rows is real, not a mistake: açıwçuları can mean "his / her one who hurtses", "their one who hurts", or "their one who hurtses" — context decides.