Synonyms of moonlighting

2 Syllables
fickle, sneaking, untrue, recreant, cheating, wicked, shifty, faithless, false, snaky
3 Syllables
traitorous, deceitful, inconstant, treacherous, two-faced, two-timing, foresworn, unchaste, perfidious, unfaithful
4 Syllables
sideline, untrustworthy, unreliable, incontinent, philandering, adulterous, false-hearted, subsidiaries, treasonable, double-crossing
5 Syllables
adulterine
6 Syllables
extracurricular