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DictionaryboshNonsense
noun / interjection

bosh

BAHSH/bˈɑʃ/

Nonsense or foolish talk.

The skeptical listener dismisses the flat-Earth explanation as bosh.

Bosh as foolish talk: an earnest speaker delivers a flat-Earth lecture, gesturing toward an unmistakable flat-Earth model while a skeptical listener holds a globe and dismisses his explanation.
Etymology
boshTurkishempty

Turkish boş means “empty.” Applied to talk, that emptiness is a lack of meaningful content, giving English bosh its sense of nonsense.

More examples

  • Bosh, he said, waving away the rumor.
  • She had no patience for such bosh.
  • The explanation sounded like bosh to everyone present.

Forms

bosh

Similar words

nonsense
Nonsense is the ordinary equivalent; bosh is an informal dismissive term.
rubbish
Rubbish can dismiss a claim as false or foolish; bosh is a more old-fashioned exclamation or noun.