hitherto
C2CEFR level
45/100Rarity: uncommon
FormalRegister
Until the present time, used to describe the state of knowledge before a new contribution.
The study documents a phenomenon that had hitherto received little scholarly attention.
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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