dēsŭētūdo — Lewis & Short
dēsŭētūdo, ĭnis, f.desuesco,
I discontinuance of a practice or habit, disuse, desuetude:
armorum,Liv. 1, 19:
bellandi, Fronto, princ. hist. p. 3, 7: desuetudine tardi,Ov. M. 14, 436; so absol., id. Tr. 5, 7, 57; Dig. 1, 3, 32 al.