Where does “未使用品” come from?

未使用品 (Japanese) comes from Japanese 未, from Japanese 羊 — a sheep.

未使用品 (Japanese): an unused item

Definitions

  1. an unused item

Ancestry of “未使用品”, step by step

未使用品 traces back through 3 separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japaneseun-; in-
2Japanesea sheep

via Japanese

StepLanguageWordMeaning
1Japanesearticle, goods; stock; quality
2Middle Chinese

via Japanese 使用

StepLanguageWordMeaning
1Japanese使用use, usage; use, utilize
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未使用品 — Etymology, Origin & Word History | Etymology Explorer