moonlighting
B2CEFR level
50/100Rarity: uncommon
TechnicalRegister
Law noun
The practice of holding a second job, usually in the evenings and often without the main employer's knowledge.
His contract's exclusivity clause expressly prohibited moonlighting for a competitor.
Business noun
Holding a second job, often secretly, alongside one's main employment.
His moonlighting for a competitor was a plain conflict of interest.
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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