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Definitions from the Web

preposterous

Part of Speech: Adjective

Sense 1: Absurd or ridiculous

Definition: Extremely unreasonable, illogical, or contrary to common sense.

Example sentence: The idea that elephants can fly is simply preposterous.

Sense 2: Outrageously foolish or impractical

Definition: Remarkably silly or senseless; displaying a complete lack of reason or judgment.

Example sentence: The preposterous suggestion of building a bridge to the moon makes no sense.

Sense 3: Contrary to nature, order, or reason

Definition: Going against the natural order or logic; weird or bizarre.

Example sentence: It was preposterous to believe that gravity could suddenly stop working.

Sense 4: Local Usage

Definition: Within a specific region, the term "preposterous" may be used to describe something that is peculiar or unconventional in that particular area.

Example sentence: The local residents found the new building design to be preposterous.