lieutenant (n.)

• acolyte
• adjutant
• admiral
• advocate
• agent
• aid
• aide
• aide-de-camp
• aider
• alternate
• assistant
• attendant
• attorney
• auxiliary
• backup
• bailiff
• beadle
• beagle
• brigadier
• captain
• champion
• coadjutor
• colonel
• commandant
• commander
• commissioner
• commodore
• constable
• deputy
• detective
• dummy
• ensign
• exec
• exponent
• fed
• federal
• figurehead
• gendarme
• general
• generalissimo
• help
• helper
• helpmate
• helpmeet
• inspector
• locum
• major
• marshal
• narc
• officer
• paraprofessional
• patrolman
• pleader
• policeman
• policewoman
• procurator
• proxy
• reeve
• representative
• roundsman
• second
• secondary
• sergeant
• servant
• sheriff
• sirdar
• skipper
• stand-in
• subaltern
• sublieutenant
• substitute
• superintendent
• surrogate
• tipstaff
• trooper
• understudy
• vicar
• vice
• vicegerent