boo

/bu/

/bu/

Other forms: booed; boos; booing

Definitions of boo

1. verb

   show displeasure, as after a performance or speech
   synonyms: hiss

   antonyms:

   applaud

   clap one's hands or shout after performances to indicate approval

   type of:

   condemn

   declare or judge unfit for use or habitation
2. noun

   a cry or noise made to express displeasure or contempt
   synonyms: Bronx cheer, bird, hiss, hoot, raspberry, razz, razzing, snort

   type of:

   call, cry, outcry, shout, vociferation, yell

   a loud utterance; often in protest or opposition
3. interjection

   used to express displeasure, disapproval, or scorn
4. interjection

   used when trying to surprise or scare someone
5. noun

   (informal) a dear friend or romantic partner, often used as an endearment