1Poor physical condition; feeling unwell due to illness, fatigue, dizziness, etc., preventing normal activity.
今朝から体調不良で会社を休んでいます。
I've been off work since this morning due to not feeling well.
授業中に体調不良を訴えて保健室へ行った。
During class, he said he felt unwell and went to the infirmary.
長時間の立ち仕事で体調不良になる人もいる。
Some people feel unwell from long periods of standing work.