desuetude
noun
[ ˈdɛswɪtjuːd ]
• 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’.
