booster (n.)
- adherent
- admirer
- amateur
- antitoxin
- applauder
- appreciator
- bag
- bang
- blind
- bonnet
- buff
- capper
- collector
- crook
- deck
- devotee
- dilettante
- dose
- draft
- dropping
- embezzler
- eulogist
- extoller
- fan
- fancier
- fix
- follower
- ganef
- ghoul
- groupie
- hit
- hypodermic
- idolater
- idolizer
- injection
- inoculation
- larcener
- larcenist
- lauder
- lifter
- panegyrist
- peculator
- pilferer
- plugger
- poacher
- popping
- portion
- potion
- praiser
- promoter
- prowler
- puffer
- robber
- rooter
- scrounger
- shill
- shoplifter
- shot
- stealer
- stick
- swindler
- thief
- tout
- touter
- vaccination
- vaccine
- votary
- worshiper