A mistake without admittance, however recognized by involved parties and not mentioned thereafter.
A chum walked away from a friend after accusing them of an ill action, despite being wrong. They both knew the manstake, and decided not to mention it.
by SnowTheDictionary August 14, 2014
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When a man fixates on a woman at a distance only to note that the woman is a man upon closer inspection.
The other day I saw a hotty on the beach, but she turned out to be a manstake.

by Harry Stotle January 14, 2008
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A mistake only a man can make.
My biggest manstake was telling her she didn't need a boob job BEFORE I'd seen her boobs!
by Elios26400 March 29, 2018
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