Boo
Boo noun - A vocal sound made to express scorn or disapproval.
Usage example: the referee's questionable call was greeted with a chorus of boos
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Synonyms for Boo
Snigger
Mutual synonyms
Cite this Source
Snigger and Boo. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/boo/snigger
Boo & Snigger. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/boo/snigger>.
Snigger or Boo. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/boo/snigger.
Google Ngram Viewer shows how "boo" and "snigger" have occurred on timeline