Preposterous

Preposterous means something that is so ridiculous or illogical that it’s hard to believe, like saying that a cat can run a marathon.

Examples

• It seemed preposterous to think that our science project could win first place when we barely had enough time to put it together, but our creativity surprised everyone, including ourselves.
• During the history lesson, our teacher described a time when people believed in dragons, and I found it preposterous that anyone could actually think such creatures existed in real life.
• When my friend suggested we could build a rocket out of soda bottles and fly to the moon, I couldn't help but laugh at how preposterous her idea sounded, even though I admired her imagination.

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Antonyms