
Simpleton
Often Pejorative
Simpleton is usually used to insult someone's intelligence, so be careful when using it.

Calling someone a simpleton in an argument can be quite offensive.
Not Literal
Sometimes, 'simpleton' is used hyperbolically to exaggerate someone's mistake or gullibility.

Don't be such a simpleton; everyone knows not to trust emails from unknown sources.
Colloquial Use
'Simpleton' is conversational and might not be suitable in formal writing or speech.

During casual talk, he jokingly called himself a simpleton for forgetting his keys.
Compare with
BlockheadDoltDoofusDopeDullardFoolIdiotImbecileMoronNumbskullThickhead
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