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A grown man who behaves like an infant.
Parth just threw a tantrum... He's such a manfant!
manfant by Mint Unit December 17, 2006
Related Words
an infant-sized man. an adult male who fits into and wears baby clothes.
he never grew out of his manfantile onsies, and continued to wear them throughout his postmature manfancy.
manfant by Pingping, He December 16, 2008
Hey Joey, look at that minfant over there.

Yo, why are you acting minfant right now?
Minfant by Seriallearner April 11, 2017
Manfant - Full grown adult male encapsulated by a 48 to 60 inch tall child-like body. A short adult male who compensates his shortcoming with attitude.
1. Chris is such a manfant, the dude is 40 years old and is only as tall as my ballsack. What's up with that?

2. Carter came over today wearing a custom made infant bodysuit, what a douchebag manfant he is...

3. Dude, manfant came running around the corner from the living room into the kitchen and headbutted me right in the sack. It hurt so bad, I bout shitted my pants.
Manfant by waarlok May 12, 2011
A man who acts just like an infant. A "man" that needs to be coddled. A man that can't take care of himself or is needy af. A man that is overbearingly smothering. A man that throws a fit like a toddler.
My boyfriend is so smothering and now he's whining because I wouldn't let him come with to check the mail. He's a crybaby manfant
Manfant by MaNina81 September 17, 2022