Other forms: deputies
A deputy is the person who acts in place of the one in charge. The deputy head, act as deputy, deputy sheriff.
The role only matters when the principal is absent, which is why deputies are chosen for reliability rather than brilliance. In several countries a Deputy is a member of the lower house of parliament. Note depute, and that the Latin means appointed or assigned.
1noundeputyThe person who acts in place of the one in charge.
“While the head teacher is ill, her deputy will run the school.”
deputy is a substitute.
French depute comes from Latin deputatus, appointed, from deputare, to assign. Repute and compute come from a related reckoning.
Proto-Indo-European
*pewH-
Latin
deputatus — appointed
French
député
English, today
deputy
From French député, from Latin deputatus (“appointed”).
Etymology from Wiktionary, CC BY-SA