booing
boo-ing
verb
Making a loud sound to express disapproval or contempt towards someone or something.
"The fans were booing the referee's decision."
noun
The loud sound made by a crowd to show strong disapproval or contempt.
"The booing from the crowd grew louder."
Thesaurus
Synonyms: Bronx cheer, razz, razzing, snort, hiss, hoot, boo, raspberry, bird