man child

Noun

man child (plural man children or men children)

1. (derogatory, informal) An adult male who is childish or immature.
   • In the end, Brown said he just couldn't stand another day of trying to run a team with two sets of rules — one for 11 players and the other for the man-child superstar.2004, Glen Macnow, Angelo Cataldi, The Great Philadelphia Sports Debate, Middle Atlantic Press, published 2004, →ISBN, page 161

   Synonyms:

   manbaby, manboy, baby boy

   Antonyms:

   macho man, machoman, alpha male

2. (archaic) A young male human; a boy.
   • Bring forth Men-Children onely: / For thy vndaunted Mettle ſhould compoſe / Nothing but Males.c. 1606 (date written), William Shakespeare, “The Tragedie of Macbeth”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount...
   • Speak unto the children of Israel, saying, If a woman have conceived seed, and born a man child: then she shall be unclean seven days; according to the days of the separation for her infirmity shall she be unclean.1611, The Holy Bible, […] (King James Version), London: […] Robert Barker, […], →OCLC, Leviticus 12:2

   Synonyms:

   baby boy, bhoy, boy, boykin, boyo, callant, chav, feely-omi, guy, knave

   Antonyms:

   girlchild, baby girl, woman child, womanchild, woman-child