bullshit
Concise Oxford English Dictionary © 2008 Oxford University Press:
bullshit /ˈbʊlʃɪt/ vulgar slang
▶noun nonsense. ▶verb (bullshits, bullshitting, bullshitted) talk nonsense in an attempt to deceive.
– derivatives
bullshitter noun.
bullshitter noun.
'bullshit' also found in these Oxford entries:

