controvert
C2CEFR level
80/100Rarity: very rare
FormalRegister
General verb
To deny or dispute the truth of something; to argue against it.
The new findings directly controvert the assumptions on which the entire policy was built.
Law verb
To dispute or contest the truth of an assertion.
The defence did not seriously controvert the fact of the collision, only the question of fault.
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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