From Wiktionary, the free dictionary
From Proto-Indo-European *ter- ( “ soft, tender; young, small ” ) .
*tárunas [ 1]
young , tender
Proto-Indo-Aryan: *tárunas
Sanskrit: तरुण ( táruṇa ) (see there for further descendants )
Proto-Iranian: *tárunah
Central Iranian:
Avestan: 𐬙𐬀𐬎𐬭𐬎𐬥𐬀 ( tau runa , “ young ” )
Northeastern Iranian:
Proto-Scythian:
Ossetian:
Persian: تر ( tar , “ wet ” ) , توله ( tôla , “ whelp ” ) , ترانه ( tarâna , “ a handsome youth ” )
Sogdo-Bactrian:
Proto-Sogdic:
Sogdian: [script needed] ( trn /tarun/ , “ tame, gentle ” )
Northwestern Iranian:
Northern Kurdish: tûle ( “ puppy ” ) , terr ( “ fresh; new; young ” ) , tol , tolaz , torran ( “ vagabond, lady's man, rascal, straggler... ” ) , tole ( “ hussy, floozie, whore ” ) , tol ( “ revenge ” )
Southwestern Iranian:
⇒ Middle Persian: [script needed] ( tarōk , “ young ” ) , [script needed] ( tōrūk , “ young dog ” )
Northern Luri: تیلںە ( tilə , “ puppy ” )
^ Lubotsky, Alexander (2011 ), “tárun.a-”, in The Indo-Aryan Inherited Lexicon (in progress) (Indo-European Etymological Dictionary Project), Leiden University