Meaning & use
preposterous
Completely contrary to reason or common sense; utterly absurd or ridiculous.
See it in a sentence
It's preposterous to expect the report to be finished in only two hours.
The company made a preposterous claim that its product could cure any illness.
A note on using this word
Preposterous is stronger than 'silly' or 'strange'; it implies something is so unreasonable it deserves to be dismissed outright.
Words with a similar meaning
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Words with an opposite meaning
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