Origin of sennightMiddle English sennyt from Old English seofon nihta: see seven and 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.