[de.sue.tude] n [ME dissuetude, fr. L desuetudo, fr. desuescere to become unaccustomed, fr. de- + suescere to become accustomed; akin to L sodalis comrade--more at sib] (15c): discontinuance from use or exercise: disuse
DESUETUDE
Meaning of DESUETUDE in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012