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crazypants

A playfully exaggerated term for someone who is acting wildly irrational, unpredictably unhinged, or just spectacularly eccentric — either as a noun (that person is a total crazypants) or as an adjective (that idea is completely crazypants).

ˈkɹeɪzməntshistoricalCurrent173 viewsLast reviewed Jun 29, 2026+ Add a definition
🗺️ Regional & Other
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#1·Apr 28, 2026

A playfully exaggerated term for someone who is acting wildly irrational, unpredictably unhinged, or just spectacularly eccentric — either as a noun (that person is a total crazypants) or as an adjective (that idea is completely crazypants). The '-pants' suffix is a classic English comedy construction that softens and cartoonifies whatever word it's attached to, making the insult more affectionate than hostile. You'd call someone a crazypants with a grin, not a grimace. Common in informal American speech and online culture.

My cat decided it was the perfect time to sprint laps at 3 AM — absolute crazypants behavior.
Origin: Part of a productive English informal pattern attaching '-pants' to adjectives or nouns as a diminutive/humorous marker (smartypants, fancypants, grumpypants). The '-pants' construction has been documented in American informal English since at least the early 20th century. Editorial expansion authored on Slangora.
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#2·Apr 27, 2026

(slang) A crazy person.

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#3·Apr 27, 2026

(slang) Crazy.

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  • “That would require the media to actually do their job and they are more concerned about having access to the daily crazypants show”

  • “"having a crazypants president is not sustainable. alarm bells should be going off in Congress and in every newsroom in America right now — and yet, our institutions have one again failed us, and have normalized having a deranged and impaired president." Jeff Tiedrich”

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  • “That would require the media to actually do their job and they are more concerned about having access to the daily crazypants show”

    — Bluesky· May 2026
  • “"having a crazypants president is not sustainable. alarm bells should be going off in Congress and in every newsroom in America right now — and yet, our institutions have one again failed us, and have normalized having a deranged and impaired president." Jeff Tiedrich”

    — Bluesky· May 2026
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🗺️About Regional & Other slang

Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.

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