atçı

/attʃɯ/

Cases

SingularPluralWhen to use it
nominativeatçıthe groomatçılathe groomsthe plain dictionary form — the doer of the sentence
genitiveatçınıthe groom'satçılanıthe grooms'the owner — whose it is
accusativeatçınıthe groom (as the object)atçılanıthe grooms (as the object)a specific, known object — whom or what
dativeatçığato the groomatçılağato the groomsdirection or recipient — to where, to whom
locativeatçıdaat / in the groomatçıladaat / in the groomswhere it is; also having — mende bar, "I have it"
ablativeatçıdanfrom the groomatçıladanfrom the groomswhere 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
myatçımmy groomatçılarımmy grooms
youratçıngyour groomatçılarıngyour grooms
his / heratçısıhis / her groomatçılarıhis / her grooms
ouratçıbızour groomatçılarıbızour grooms
you all'satçığızyou all's groomatçılarığızyou all's grooms
theiratçılarıtheir groomatçılarıtheir grooms

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