Harebrain

adj, noun

adj, noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    A person who lacks good sense; one who is foolish and reckless.

    "...rash harebrain treating matters that require age and gravity;"

Adjective
  1. 1
    Alternative form of harebrained. alt-of, alternative

    "I mean it (saith the king) by that same harebrain, wild-fellow, my subject, the Earl of Suffolk, who is protected in your country, and begins to play the fool, when all others are weary of it.""

Example

More examples

"...rash harebrain treating matters that require age and gravity;"

Etymology

From hare + brain.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.