joldaş

/dʒoldaʃ/

Cases

SingularPluralWhen to use it
nominativejoldaşthe fellow travelerjoldaşlathe fellow travelersthe plain dictionary form — the doer of the sentence
genitivejoldaşnıthe fellow traveler'sjoldaşlanıthe fellow travelers'the owner — whose it is
accusativejoldaşnıthe fellow traveler (as the object)joldaşlanıthe fellow travelers (as the object)a specific, known object — whom or what
dativejoldaşhato the fellow travelerjoldaşlağato the fellow travelersdirection or recipient — to where, to whom
locativejoldaşdaat / in the fellow travelerjoldaşladaat / in the fellow travelerswhere it is; also having — mende bar, "I have it"
ablativejoldaşdanfrom the fellow travelerjoldaşladanfrom the fellow travelerswhere 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
myjoldaşımmy fellow travelerjoldaşlarımmy fellow travelers
yourjoldaşıngyour fellow travelerjoldaşlarıngyour fellow travelers
his / herjoldaşıhis / her fellow travelerjoldaşlarıhis / her fellow travelers
ourjoldaşıbızour fellow travelerjoldaşlarıbızour fellow travelers
you all'sjoldaşığızyou all's fellow travelerjoldaşlarığızyou all's fellow travelers
theirjoldaşlarıtheir fellow travelerjoldaşlarıtheir fellow travelers

The overlap in the last rows is real, not a mistake: joldaşları can mean "his / her fellow travelers", "their fellow traveler", or "their fellow travelers" — context decides.