代だい物ぶつ

noun

substitute; replacement

Refers to a thing used in place of another, often with a nuance of being a stand-in or makeshift alternative.

• 本ほん物ものの革かわの代だい物ぶつとして合ごう成せい皮ひ革かくを使つかった。

  I used synthetic leather as a substitute for real leather.