co-opt
C1CEFR level
55/100Rarity: uncommon
TechnicalRegister
To appoint someone to a body without a formal election by its existing members.
The board voted to co-opt a cybersecurity expert to fill the casual vacancy until the next meeting.
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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