Desuetude (noun)
des-yu-it-ude
A state of disuse.
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’.
Example sentences
“The docks had fallen into a state of desuetude over the years.”