optimist

/optimist/ · plural optimistle

Cases and owners

Singular — cases of optimist, plain and with an owner
Case—plainmenimyseniyouranıhis / herbiznioursizniyou all'salanıtheir
Nominativeoptimistthe optimistoptimistimmy optimistoptimistiŋyour optimistoptimistihis optimistoptimistibizour optimistoptimistigizyou all's optimistoptimistleritheir optimists
Genitiveoptimistnithe optimist'soptimistimimy optimist'soptimistiŋiyour optimist'soptimistinihis optimist'soptimistibizniour optimist'soptimistigizniyou all's optimist'soptimistlerinitheir optimists'
Accusativeoptimistnithe optimist (as the object)optimistimimy optimist (as the object)optimistiŋiyour optimist (as the object)optimistinhis optimist (as the object)optimistibizniour optimist (as the object)optimistigizniyou all's optimist (as the object)optimistlerintheir optimists (as the object)
Dativeoptimistgeto the optimistoptimistimeto my optimistoptimistiŋeto your optimistoptimistineto his optimistoptimistibizgeto our optimistoptimistigizgeto you all's optimistoptimistlerineto their optimists
Locativeoptimistdein / at the optimistoptimistimdein / at my optimistoptimistiŋdein / at your optimistoptimistindein / at his optimistoptimistibizdein / at our optimistoptimistigizdein / at you all's optimistoptimistlerindein / at their optimists
Ablativeoptimistdenfrom the optimistoptimistimdenfrom my optimistoptimistiŋdenfrom your optimistoptimistindenfrom his optimistoptimistibizdenfrom our optimistoptimistigizdenfrom you all's optimistoptimistlerindenfrom their optimists
Plural — cases of optimist, plain and with an owner
Case—plainmenimyseniyouranıhis / herbiznioursizniyou all'salanıtheir
Nominativeoptimistlethe optimistsoptimistlerimmy optimistsoptimistleriŋyour optimistsoptimistlerihis optimistsoptimistleribizour optimistsoptimistlerigizyou all's optimistsoptimistleritheir optimists
Genitiveoptimistlenithe optimists'optimistlerimimy optimists'optimistleriŋiyour optimists'optimistlerinihis optimists'optimistleribizniour optimists'optimistlerigizniyou all's optimists'optimistlerinitheir optimists'
Accusativeoptimistlenithe optimists (as the object)optimistlerimimy optimists (as the object)optimistleriŋiyour optimists (as the object)optimistlerinhis optimists (as the object)optimistleribizniour optimists (as the object)optimistlerigizniyou all's optimists (as the object)optimistlerintheir optimists (as the object)
Dativeoptimistlegeto the optimistsoptimistlerimeto my optimistsoptimistleriŋeto your optimistsoptimistlerineto his optimistsoptimistleribizgeto our optimistsoptimistlerigizgeto you all's optimistsoptimistlerineto their optimists
Locativeoptimistledein / at the optimistsoptimistlerimdein / at my optimistsoptimistleriŋdein / at your optimistsoptimistlerindein / at his optimistsoptimistleribizdein / at our optimistsoptimistlerigizdein / at you all's optimistsoptimistlerindein / at their optimists
Ablativeoptimistledenfrom the optimistsoptimistlerimdenfrom my optimistsoptimistleriŋdenfrom your optimistsoptimistlerindenfrom his optimistsoptimistleribizdenfrom our optimistsoptimistlerigizdenfrom you all's optimistsoptimistlerindenfrom their optimists

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

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