foolishness comes from the word foolish and is the action in wich you are doing somthing
"stop your foolishness"
ayon kay matt ika-01 ng Enero, 2005
adverb. to state a condition/circumstance/setting which denotes a foolish state.
my world is based on foolishness.
ayon kay NLU ika-07 ng Setyembre, 2005