noun, noun which may take the genitive case particle 'no'
poorly selling line; unprofitable product line
Business term for a product line that sells poorly and is unprofitable. Often contrasted with 売れ筋 (best-selling line).
Antonyms: 売れ筋
この商品は完全に死に筋になってしまった。
This product has become a completely unprofitable line.
死に筋の在庫を処分する必要がある。
We need to dispose of the dead stock.
Antonym: 売れ筋 refers to a best-selling or popular product line, while 死に筋 is a poorly selling one.
Compound of 死に (stem of 死ぬ, 'to die') and 筋 ('line, lineage'), literally 'dying line'. The exact historical derivation is uncertain, but the term is used in business contexts to describe unprofitable product lines.