tuisleadh

a stumbling, fall, so Irish, Old Irish tuisled, prolapsio, tuisel, casus, dofuislim, labo: *to-fo-ess-sal-im, root sal, spring; Latin salio, leap, dance, English insult; Greek $$Ga$$`/llomai, leap; cf. Lithuanian sele$$?/ti, glide, creep. Ascoli analyses it into *to-fo-isl-, where isl is what remains of ísel or ìosal, low.