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preposterously
adjective
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How to pronounce preposterously:

Definition of preposterously:

preposterously (adjective):
contrary to nature, reason, or common sense absurd

Synonyms for preposterously:

incrediblyunbelievablysenselesslyfoolishlyidioticallyunreasonablyludicrouslyridiculouslyinanelyirrationally

Antonyms for preposterously:

seriouslysomewhatthoughtfullydiplomaticallyskillfullypracticallyshrewdlysensiblyplausiblysoberly
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Other 5-syllable words like preposterously

Here are some other common words that have 5 syllables, like preposterously does.

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