Comments: The root has changeable class affixes (w- for the 1st class, j- for the second). Variation of final vowels (neutralized in Av., Akhv. and Tind.) can be explained by former class suffixation (parallelling class prefixation: *w-ošV-w > wošo,*j-ošV-j > joši). Masculine and feminine forms are neutralized in Av., Akhv. and Tind. Note that there are also forms reflecting PA *b-ošV 'child of animals' (Akhv. baša, And. boši etc.). In Akhv. there also exists a form r-eša meaning 'heifer' (*'daughter of animal'), parallelling PL *ruš: and especially PGB *riže 'heifer'.
The word for 'woman' in And. (jošḳʷa) is a contraction of joši+heḳʷa 'girl+person'.