desuetude.txt

desuetude | ˈdeswəˌt(y)o͞od |
noun formal
a state of disuse: the docks fell into desuetude.
ORIGIN
early 17th century (in the sense ‘cessation’): from French, from Latin desuetudo, from desuet- ‘made unaccustomed’, from the verb desuescere, from de- (expressing reversal) + suescere ‘be accustomed’.