Related Clues:

• "Bad call!"
• It's said with a thumbs-down
• Halloween cry divided in this puzzle's eight longest answers
• One-named rock star
• Hiss accompanier
• Blast from the bleachers
• Raspberry relative
• Unwelcome reception
• Sibilant threat
• React to a bad call
• Heckling holler
• Sound of displeasure
• *Let off some steam?
• "Bad call, ump!"
• Sibilant sound of disapproval