Answer: booer

AnswerCrossword Clue
BOOERUninhibited critic.
BOOERRude person in the bleachers
BOOERRude one in an audience
BOOEROne who's not a fan
BOOEROne unhappy with a call
BOOERUncool fan?
BOOERMay be a Bronx cheerleader
BOOERDisenchanted fan, at times
BOOERBronx cheerleader, e.g.
BOOERRude audience member
BOOEROne voicing displeasure
BOOERAngry fan
BOOERDisapproving fan
BOOEROne kind of fan
BOOERHeckler.
BOOERFrustrated fan.
BOOERExpert in Bronx cheers
BOOERPolitical heckler.
BOOERBronx cheerer.
BOOERUnhappy bleacherite, at times
BOOERMiffed fan
BOOERUnhappy and loud spectator
BOOERSource of raspberries, perhaps
BOOERDispleased spectator
BOOERDisenchanted fan
BOOERSports spectator, at times
BOOERUnhappy spectator
BOOERDisappointed fan, maybe
BOOEROne who gives a hoot?
BOOERHeckler
BOOERUnhappy fan