jürek

/dʒyrek/

Cases

SingularPluralWhen to use it
nominativejürekthe heartjüreklethe heartsthe plain dictionary form — the doer of the sentence
genitivejüreknithe heart'sjüreklenithe hearts'the owner — whose it is
accusativejüreknithe heart (as the object)jüreklenithe hearts (as the object)a specific, known object — whom or what
dativejürekgeto the heartjüreklegeto the heartsdirection or recipient — to where, to whom
locativejürekdeat / in the heartjürekledeat / in the heartswhere it is; also having — mende bar, "I have it"
ablativejürekdenfrom the heartjürekledenfrom the heartswhere 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
myjüregimmy heartjüreklerimmy hearts
yourjüregingyour heartjürekleringyour hearts
his / herjüregihis / her heartjüreklerihis / her hearts
ourjüregibizour heartjürekleribizour hearts
you all'sjüregigizyou all's heartjüreklerigizyou all's hearts
theirjürekleritheir heartjürekleritheir hearts

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