1. Show displeasure, as after a performance or speech
   - hiss

1. A cry or noise made to express displeasure or contempt
   - hoot, Bronx cheer [N. Amer], hiss, raspberry, razzing [N. Amer], razz [N. Amer], snort, bird

1. Expressing disapproval 
2. Exclamation used to startle or frighten

Derived forms: booing, boos, booed

Type of: call, condemn, cry, outcry, shout, vociferation, yell

Antonym: applaud

Encyclopedia: Boo

• maple-leaf
• maple-leaf begonia
• maple-leaved bayur
• maplelike
• mapmaking
• mapper
• mapping
• mapquest
• Maputo
• maquette
• maquiladora
• maquillage
• Maquis
• Maquisard
• mar
• mara
• marabou
• marabou stork
• marabout
• maraca
• Maracaibo
• Maracan language
• Maracay
• Maraco
• marae