blackleg
C2CEFR level
92/100Rarity: very rare
TechnicalRegister
Law noun
A worker who continues working during a strike, or who takes a striker's place.
Union members jeered the blacklegs who crossed the picket line each morning.
Business noun
A worker who defies a strike or takes a striker's job, regarded as a traitor by colleagues.
Anyone who crossed the line was branded a blackleg and shunned in the canteen for years.
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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