to wit

to wit idiom
That is to say, namely, as in There are three good reasons for not going, to wit, we don't want to, we don't have to, and we can't get a reservation. This expression comes from the now archaic verb to wit, meaning “know or be aware of,” not heard except in this usage. [Late 1500s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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