Proto-Basque: *ug-ac
Meaning: 1 (female) breast, teat 2 mother's milk 3 step-(-parent, -child) 4 god-(-parent, -child) 5 foster- (-parent) 6 groomsman / bridesmaid 7 master, boss
Bizkaian: ugatz 1, 2, ugaz- 3, ugazaba 7
Gipuzkoan: ugatz 2, ugaz- 3, ugazaba 7
High Navarrese: ugaz- 3
Low Navarrese: ? ugatz 1
Lapurdian: ugatz 1
Baztanese: ugaz- 3
Zuberoan: egüz-3, 4, 5, 6
Comments: In compounds (B, G, AN) ugaz-aita, ugaz-ama, ugaz-[s]eme, ugaz-alaba ‘step-father, -mother, -son, -daughter’; in Z with metathesis of vowels: egüz-áita, egüz-ã́mã, egüts-[s]éme, egüz-alhába, etc.; (B, G) ugazaba ‘boss, master’ < *ugac + *aśa-ba 'ancestor', per Mitxelena. Bsq *ug(a)- = PEC *wHenχa is quite phonetically regular: for Bsq *u- = PNC *wHV- cf. Bsq *urde ‘pig’ (q.v.) ~ PNC *wHārƛ̣wǝ id.; and for Bsq *-g- = PNC *-nχ-, cf. Bsq *lega- ‘gravel’ (q.v.) ~ PEC *ƛ̣ănχwV ‘cobblestone(s)’, and other examples.
