chairman
A2CEFR level
10/100Rarity: common
TechnicalRegister
The presiding arbitrator of a three-member tribunal, responsible for its conduct.
As chairman, she cast the deciding vote where the co-arbitrators were split.
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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