beat someone's brains out

verb

To beat someone very severely (especially in the head).

Similar
punch someone's lights out
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Meanings

verbbeat someone's brains out (third-person singular simple present beats someone's brains out, present participle beating someone's brains out, simple past beat someone's brains out, past participle beaten someone's brains out or beat someone's brains out)

present singular third person beats someone's brains out · participle present beating someone's brains out · participle past beaten someone's brains out

  1. idiomaticTo beat someone very severely (especially in the head).

    Synonyms: punch someone's lights out

Synonyms & antonyms

verbTo beat someone very severely (especially in the head).

Similar
punch someone's lights out
Also see
punch someone's lights out
Cite this entry
APA

beat someone's brains out. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/beat%20someone's%20brains%20out

MLA

“beat someone's brains out.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/beat%20someone's%20brains%20out. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “beat someone's brains out,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/beat%20someone's%20brains%20out.

Source: beat someone's brains out on Wiktionary, CC BY-SA 4.0.