Definition of boo word in US English:

boo word


  • A word or expression denoting something that is regarded with disapproval or dislike.

    ‘positivism has become something of a boo word among many social scientists’
    • ‘Why, I wonder… because it's a sort of code word or a boo word or laziness or what?’
    • ‘Ideology is a boo word, a pejorative word, but everyone has ideologies, you just have to proceed from that point of view.’
    • ‘It's obviously what Ian Kershaw (historian) called a fashionable boo word.’
    • ‘Mention has been made here before of an old university tutor of mine who used to divide the language into hooray words and boo words.’