Very poor or inferior in quality, condition, or environment; bad. Commonly used in more formal or written contexts.
劣悪な労働環境が問題になっている。
Poor working conditions have become a problem.
その工場では劣悪な材料が使われていた。
Poor-quality materials were being used at that factory.
劣悪な扱いを受けたと訴える労働者もいる。
There are also workers who complain of being treated poorly.