right-hand man

noun

right-hand man

noun

1

A trusted assistant.

This guy is the real thing [...] and he's plucked my girl up to be his right-hand man because he knows she's the real deal, too.2014, Christina Lauren, Dirty Rowdy Thing, pages 303–304:

Coordinate terms: right-hand woman

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.