• synonyms


[fawrth-with, -with, fohrth-]
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  1. immediately; at once; without delay: Any official accused of dishonesty should be suspended forthwith.
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Origin of forthwith

Middle English word dating back to 1250–1300; see origin at forth, with
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for forthwith


  1. at once; immediately
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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 forthwith

c.1200 (prep); early 14c. (adv.), from forth + with. The Old English equivalent was forð mid.

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Online Etymology Dictionary, © 2010 Douglas Harper