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See also: se'nnight



PIE word
PIE word

From Middle English senight, senyght, sinight (seven days or nights, a week) [and other forms], a shortened form of seven-night, sevenight, sevenyght [and other forms],[1] from Late Old English seofeniht, seoueniht (compare seofonnihte (seven days old; seven days long, adjective)), from seofon (seven) (ultimately from Proto-Indo-European *septḿ̥ (seven)) + niht (night; day (when computing spans of time)) (ultimately from Proto-Indo-European *nókʷts (night)). Doublet of sevennight.[2]



sennight (plural sennights)

  1. (archaic or obsolete)
    1. A period of seven consecutive days and nights; a week.
      Synonym: (archaic or obsolete) sevennight
    2. (attributively) Preceded by a specified day such as Sunday, today, or yesterday: a week from (either before or after) the specified day.
      Synonym: (archaic or obsolete) sevennight
  2. (obsolete)
    Synonym: (obsolete) sevennight
    1. Preceded by a specified day and come: a week after the specified day.
    2. Preceded by a specified day and gone or was: a week before the specified day.

Alternative forms[edit]

Coordinate terms[edit]



  1. ^ sē̆ven-night, n.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007.
  2. ^ Compare “sennight, n.”, in OED Online Paid subscription required, Oxford, Oxfordshire: Oxford University Press, December 2022; “sennight, n.”, in Lexico,; Oxford University Press, 2019–2022.

Further reading[edit]