ˈidēəsē, -si noun
( -es )
Etymology: from idiot, after such pairs as English accurate : accuracy
1. : extreme mental deficiency commonly due to incomplete or abnormal development of the brain and usually congenital or due to arrest of development following disease or injury in early childhood
2.
a. : something notably stupid or foolish
the usual bureaucratic idiocies — W.M.Hitzig
b. : something so light, frothy, and trivial that it is usually considered silly
amused by his amiable idiocies