intervener
C1CEFR level
65/100Rarity: rare
TechnicalRegister
A person allowed to join existing proceedings because of an interest in their outcome.
The regulator applied to appear as an intervener, arguing that the ruling would affect an entire industry.
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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