• synonyms


or se'n·night

[sen-ahyt, -it]
noun Archaic.
  1. a week.
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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

Examples from the Web for sennight

Historical Examples of sennight

  • And this I did about a sennight after, when he had finished the unloading of his cargo.

    With the King at Oxford

    Alfred J. Church

  • This day sennight I am to have brought to my closet a heretic, Dr Barnes.

    The Fifth Queen

    Ford Madox Ford

  • I, too, am a clerk of a sort, for Henriet tonsured me on Wednesday sennight.

    The Black Douglas

    S. R. Crockett

  • He read us a letter from the Dr., his father, dated yesterday sennight, being Sunday.

    Abigail Adams and Her Times

    Laura Elizabeth Howe Richards

  • On the day sennight after my trial at the Old Bailey, I prepared in due form to pay him a visit.

British Dictionary definitions for sennight



  1. an archaic word for week
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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 sennight


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

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Online Etymology Dictionary, © 2010 Douglas Harper