wall-crossing
C2CEFR level
92/100Rarity: very rare
TechnicalRegister
Bringing an outside party inside a confidentiality barrier to receive material non-public information.
Before we sound him out on the deal we'll need a formal wall-crossing so he's restricted from trading.
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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