См. также: on the assets side of a balance sheet, on the part of smb/on smb's part, on the terms and subject to the conditions, on the verge of starvation
moonlighter (plural moonlighters)
1. A person who moonlights, or works a second job on the side. (Wiktionary)
According to our information, the White Widow fought on the side of Ukrainian volunteer battalion Aidar as a sniper. (Belfast Telegraph)
He makes a little money on the side by cleaning windows in his spare time. (Cambridge Advanced Learner's Dictionary & Thesaurus)
