ab initio
C2CEFR level
88/100Rarity: very rare
TechnicalRegister
From the very beginning, used to describe something treated as invalid or valid from its inception.
Because the parties never had capacity to contract, the agreement was void ab initio.
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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