Top definition
immediately, right away
Open that letter forthwith! It's important!
by Waffles November 12, 2004
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2
at leisure; so as not to disrupt; in due time
He attended his duties forthwith; which is to say he spent the afternoon smelling the grass, contemplating what time the following week would best be filled with said activities.
by hermesius February 10, 2011
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3
Something you shout out after saying something to emphasize it. Usually meant to be funny.
Fred: Hand me the nachos Steve.
Steve: You get 'em, they're like two feet away from you.
Fred: FORTHWITH!
by Wesley Durrance September 19, 2005
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