Answer: booster

AnswerCrossword Clue
BOOSTEREnthusiast
boosterdose given to maintain or renew the effect of a previous one
boosterperson who steals merchandise; shoplifter
boosterenthusiastic supporter
boosterthat which boosts
boosteranything that increases the power or effectiveness of something
boosterdevice for increasing or decreasing circuit voltage
BOOSTERFollow-up shot
BOOSTERBig fan
BOOSTEREnthusiastic supporter
BOOSTERRah-rah sort
BOOSTERSupporter
BOOSTERFan
BOOSTERRocket engine
BOOSTERAmplifier in radio.
BOOSTEREucomiast.
BOOSTERArdent fan
BOOSTERDevotee
BOOSTERRah-rah fan
BOOSTERRocket stage
BOOSTERSecond shot
BOOSTERArdent supporter
BOOSTERLaunch vehicle