noun
crude manufacturing; shoddy production
Refers to the act of making something in a rough, low-quality, or careless manner. Often used in compounds like 粗製乱造 (そせいらんぞう, 'mass production of inferior goods').
粗製乱造は市場の信頼を損なう。
Shoddy mass production damages market trust.
この製品は粗製のため、すぐに壊れてしまった。
This product broke quickly because of its crude manufacture.
Compound of 粗 (そ, 'coarse' or 'rough') and 製 (せい, 'manufacture' or 'make'). The exact historical derivation is uncertain, but the combination straightforwardly conveys 'crude production'.