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Pronunciation varies by accent · adjective
(nonstandard or humorous) comparative form of foolish: more foolish.
If he had not known that, he would have been foolisher than a mouse or a minnow.
Use foolisher when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Foolisher means (nonstandard or humorous) comparative form of foolish: more foolish.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
If he had not known that, he would have been foolisher than a mouse or a minnow.
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