moonlight
verb [ I ]
WORKPLACE uk/ˈmuːnlaɪt/ usto work at an extra job, especially without telling your main employer:
Nearly a third of nurses are moonlighting to make ends meet, according to a report.
moonlight as sth I occasionally moonlight as a caterer.
moonlighter
noun [ C ]
Trusting a moonlighter to do your house renovation work is risky.