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Wednesbury unreasonableness

noun

C2CEFR level
97/100Rarity: very rare
TechnicalRegister

The standard by which a decision so unreasonable that no reasonable authority could have reached it may be quashed.

The refusal was so perverse as to meet the high threshold of Wednesbury unreasonableness.

Similar: irrationality

Topic: Constitutional & public in Legal English

Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.

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