SAT GRE TOEFL

lunatic

Definition

A lunatic is a person who behaves irrationally or with extreme recklessness; historically used to describe someone with mental illness.

Example

"Only a lunatic would try to climb that cliff without safety gear."
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Study tips featuring "lunatic"

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Related words

SAT antonym SAT abase SAT abdicate SAT abdomen SAT abduction SAT abet SAT abeyance SAT abject SAT abjure SAT ablution SAT abnegate SAT abnormal