A spanglish term to describe a person who is acting like more than a “chach” (See term for “chach” wish i had a hyperlink here btw).

The “mu” acts as the spanish “prefix” for muchach. “Muy” means “very”. Similar to saying someone is very chach. More than a chach. They’re a muchach.
That guy over there, he ain’t nothin’, but a muchach.

muCHaaach.
by Muchach February 28, 2021
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Neither a boy or a girl...perhaps a girl-boy hybrid.

Either a boy who looks like a girl, or a girl who looks like a boy. The difference is often very hard to tell.

Taken from the root of "muchacho" and "muchacha."
Well he's a muchach.....muchach......he's a muchach.
by Steven April 29, 2004
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