Extremely foolish; crazy: a crackbrained idea
More example sentences
- It cannot be possible that a man of that sagacity should be associated with such a crackbrained scheme.
- A belief or a conviction, no matter how crackbrained, is not an assertion subject to editorial or legal correction.
- On his own, he would have shared in the crackbrained political theories that abounded wherever tourists were to be found.
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