ma ‧ lar ‧ key /məˈlɑːki $ -ˈlɑːr-/ BrE AmE noun [uncountable]
[ Date: 1900-2000 ; Origin: Perhaps from the family name Malarkey ]
informal things which you think are silly or untrue SYN nonsense :
I’m not interested in all this scientific malarkey.
You don’t believe in ghosts and all that malarkey, do you?