Sukas

Theoretically, it could be a surn. of Lithuanian origin, the root of which we could connect with lit. turn „versti judėti aplink savo ašį; judėti ratu, aplink; apgaudinėti“ (DLKŽ). But cf. Russian Cук (CAMC IV 302), Polish. Suka (SSNO V 246) or even bRuss. Cухий, Russian. Cухoй, Ukr. Cухoй, Cухий ¹, Polish. Suchy (SSNO V 245).