I. “+ transitive verb
Etymology: Middle English disusen, from dis- (I) + usen to use — more at use
1. archaic : to make unaccustomed or unused : disaccustom
2. : to discontinue the use or practice of : discard , abandon — now used chiefly in the past participial form
a golf course long disused
a disused initiation rite
the baroque scroll pediment had been disused on exteriors before the revolution — Fiske Kimball
II. noun
Etymology: dis- (I) + use
: cessation of use, practice, or exercise : desuetude
intellectual vigor has been circumscribed by the disuse of the scholar's language — A.A.Hill
the mine ultimately fell into disuse
combat intelligence had atrophied by disuse — Shipley Thomas
we should die of idiocy through disuse of our mental faculties if we did not fill our heads with romantic nonsense out of illustrated newspapers and novels and plays and films — G.B.Shaw