[south-west; Nautical sou-west]


the point or direction midway between south and west. Abbreviation: SW
a region in this direction.
the Southwest, the southwest region of the United States.


lying toward, situated in, or directed toward the southwest.
coming from the southwest, as a wind.


in the direction midway between south and west.

Origin of southwest

before 900; Middle English; Old English sūthwest. See south, west
Related formssouth·west·ern, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for southwest



the point of the compass or the direction midway between west and south, 225° clockwise from north
(often cap usually preceded by the) any area lying in or towards this direction

adjective Also: southwestern

(sometimes capital) of or denoting the southwestern part of a specified country, area, etcsouthwest Italy
situated in or towards the southwest
(esp of the wind) from the southwest


in, to, towards, or (esp of the wind) from the southwest
Symbol: SW
Derived Formssouthwesternmost, adjective



the Southwest the southwestern part of Britain, esp Cornwall, Devon, and Somerset
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 southwest

Old English suð-west; see south + west. As a noun from early 12c. Related: Southwester; southwesterly.

Online Etymology Dictionary, © 2010 Douglas Harper