sennight

or se'n·night

[sen-ahyt, -it]

Origin of sennight

before 1000; Middle English sevenyht, seoveniht(e), sennyght, etc., Old English seofon nihta. See seven, night
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for se'nnight

sennight

se'nnight

noun
  1. an archaic word for week

Word Origin for sennight

Old English seofan nihte; see seven, night
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for se'nnight

sennight

n.

"period of seven days, a week" (archaic), c.1200, contracted from Old English seofon nihta; see seven + night. Also cf. fortnight.

Online Etymology Dictionary, © 2010 Douglas Harper