baby brother

noun

A younger brother regardless of age.

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Meanings

nounbaby brother (plural baby brothers)

plural baby brothers

  1. informalA younger brother regardless of age.
  2. Used other than figuratively or idiomatically: see baby, brother.

Synonyms & antonyms

Also see
younger brother
Cite this entry
APA

baby brother. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/baby%20brother

MLA

“baby brother.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/baby%20brother. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “baby brother,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/baby%20brother.

Source: baby brother on Wiktionary, CC BY-SA 4.0.