horseshit

[hawrs-shit, hawrsh-]Slang: Vulgar.
interjection
  1. (used to express disbelief, incredulity, etc.)

Origin of horseshit

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for horseshit

horseshit

noun
  1. slang rubbish; nonsense

usage

This word was formerly considered to be taboo, and it was labelled as such in previous editions of Collins English Dictionary . However, it has now become acceptable in speech, although some older or more conservative people may object to its use
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012