# maniacal

/məˈnaɪəkəɫ/ (US) · /mɐnˈaɪəkəl/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/maniacal
Updated: 2026-10-18

## Definition

wild and out of control, with crazy energy or excitement. You use it for laughter, behaviour, or focus that feels too intense to be normal.

For teachers: exhibiting frenzied, uncontrolled energy or obsessive intensity suggestive of mania. Often describes laughter, drive, or attention that appears excessive and irrational.

## Examples

- He gives a maniacal laugh during the game.
- The tired parents hear maniacal laughter coming from the children's room past midnight.
- The leader pursued his plan with maniacal focus, ignoring warnings from advisers and clear evidence of harm.

## Synonyms

manic, frenzied, frantic, wild, hysterical, crazy, mad

## Antonyms

calm, controlled, composed

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.