noun
disuse; non-use; not using
Refers to the state of not being used or the act of not using something. Often used in formal or technical contexts.
長期間の不使用で機械が故障した。
The machine broke down due to long-term disuse.
この機能の不使用は推奨されない。
Non-use of this feature is not recommended.
Compound of 不 (fu, 'not') and 使用 (shiyō, 'use').