This base type goes back to the Latin past participle passive exsūctus 'sucked out' (cf. Georges, under exsugo and FEW 3, 324f., under exsuctus) and belongs to the succeeding Romance words 'dry' (ita. asciutto, pms. sü(i)t, roh. (Engadine) süt, cat. aixut, spa. enjuto, por. enxuto) and 'lean' (ron. supt). For VerbaAlpina, some Friulian records with the meaning KÄSE are relevant.