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déraisonnable

unreasonable

adjective deh-reh-zo-NAB-luh Rare

Origin: dé- (un-) + raisonnable (reasonable)

Usage Note

Déraisonnable describes a demand, behaviour, or person that goes beyond what reason or fairness allows; it is slightly more formal than pas raisonnable. It does not change for gender: une exigence déraisonnable, un comportement déraisonnable.

Examples

"Ses exigences étaient complètement déraisonnables."

Natural Translation

His demands were completely unreasonable.

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