right-hand man
noun
an indispensable or invaluable assistant; right hand.
Origin of right-hand man
First recorded in 1655–65
Words nearby right-hand man
right-eyed flounder,
right-footed,
right-footer,
right-hand,
right-hand buoy,
right-hand man,
right-hand rule,
right-handed,
right-hander,
right-laid,
right-minded
Idioms and Phrases with right-hand man
right-hand man
Also, right-hand woman. A trusted helper, as in Give it to Jill, she's my right-hand man. Based on the idea that in most people the right hand is the stronger of the two, this idiom today usually disregards gender, as in the example. However, in the the 17th and 18th centuries it also meant a soldier in a post of command on the right side of a cavalry unit, and then always denoted a man. [c. 1800]