deputy

noun

A person who is appointed to undertake the duties of a superior in the superior's absence.

SYNONYMS

actingad interimadjutantagentaideambassadorassistantauxiliarycaretakerdelegatedeputeexpedientialfill-inhelperhenchmanjuniorlegatelieutenantlocumlocum tenensman/girl Fridaynumber twoPApersonal assistantpinch-hittingpro temporeprovisionalproxyreliefrepresentativereserveright hand mansecondsecond in commandsecond-stringshort-termsidekickspokespersonstand-instopgapsubalternsubordinatesubstitutesupplysurrogatetemptemporaryunderlingunderstudyvice