Archaic a week
Origin of sennightMiddle English sennyt ; from Old English seofon nihta: see seven and amp; night
Origin of sennightMiddle English senight, contraction of seveniht, from Old English seofon nihta, seven nights : seofon, seven; see seven + nihta, pl. of niht, night; see night.
- (archaic) After a sennight has passed.
- (archaic) A sennight ago.
Shortened form of sevennight.