Focus on the pronunciation of boo
English definition of “boo”
/bu/ v [I/T] (present tense boos, present participle booing, past tense and past participle booed) (DISAPPROVE)
› to call out the word "boo" to express disapproval: [T] They booed him off the stage. boo
/bu/ n [C] (plural boos) › Students showed their dislike with a chorus of boos.