noun, noun or participle which takes 'suru', transitive verb
Broadly used for tangible and intangible losses, including wasted time, money, or opportunity. Often used in compounds like タイムロス.
この作業は時間のロスだ。
This task is a waste of time.
データをロスしないようにバックアップを取って
Please back up the data so you don't lose it.
noun, used as a suffix
feeling of loss
Colloquial suffix-like use, often attached to nouns to express a sense of emptiness or missing something, e.g., 〇〇ロス.
ドラマが終わってしまって、いま完全に〇〇ロスだ。
Now that the drama has ended, I'm totally feeling the loss of it.