- a boy or man showing excessive attachment to or dependence on his mother.
Origin of mama's boy
Related Words for mama's boymilquetoast, baby, crybaby, lightweight, mollycoddle, namby-pamby, sissy, pansy, softy
A sissy, especially a boy or man excessively attached to his mother. For example, The children called Tom a mama's boy because he ran home with every little problem. This sexist expression has survived despite its pejorative tone. [Colloquial; mid-1800s]