quisling
C2CEFR level
88/100Rarity: very rare
FormalRegister
A traitor who collaborates with an occupying enemy force.
Once liberation came, the quislings who had served the occupiers were swiftly rounded up.
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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