bedfellow

[bed-fel-oh]
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noun
  1. Also called bedmate. a person who shares one's bed.
  2. an associate or collaborator, especially one who forms a temporary alliance for reasons of expediency: Politics makes strange bedfellows.

Origin of bedfellow

First recorded in 1400–50, bedfellow is from the late Middle English word bedfelow. See bed, fellow
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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British Dictionary definitions for bedfellow

bedfellow

noun
  1. a person with whom one shares a bed
  2. a temporary ally or associate
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 bedfellow
n.

"close friend, roommate," mid-15c., from bed (n.) + fellow (n.). Also (late 15c) "concubine." Earlier in the "close companion" sense was bed-fere (early 14c.). Bedsister "husband's concubine" is recorded in Middle English (c.1300).

Online Etymology Dictionary, © 2010 Douglas Harper