geniy

/ɡenij/

Cases

SingularPluralWhen to use it
nominativegeniythe geniusgeniylethe geniusesthe plain dictionary form — the doer of the sentence
genitivegeniynithe genius'geniylenithe geniuses'the owner — whose it is
accusativegeniynithe genius (as the object)geniylenithe geniuses (as the object)a specific, known object — whom or what
dativegeniygeto the geniusgeniylegeto the geniusesdirection or recipient — to where, to whom
locativegeniydeat / in the geniusgeniyledeat / in the geniuseswhere it is; also having — mende bar, "I have it"
ablativegeniydenfrom the geniusgeniyledenfrom the geniuseswhere 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
mygeniyimmy geniusgeniylerimmy geniuses
yourgeniyingyour geniusgeniyleringyour geniuses
his / hergeniyihis / her geniusgeniylerihis / her geniuses
ourgeniyibizour geniusgeniyleribizour geniuses
you all'sgeniyigizyou all's geniusgeniylerigizyou all's geniuses
theirgeniyleritheir geniusgeniyleritheir geniuses

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