horsefeathers

/ˈhɔːrsˌfɛðərz/
interjection
  1. Used to express disbelief, rejection, or annoyance; nonsense.
    • Horsefeathers! That excuse is the worst I've ever heard.
    • When he said he'd finish the project by tomorrow, she just laughed and said, 'Horsefeathers!'
    • Horsefeathers! I don't believe a word of that story.
noun
  1. Nonsense; something foolish or untrue.
    • The article was full of horsefeathers about the election.
    • Don't listen to that talk; it's all horsefeathers.
    • Everything he said was pure horsefeathers.