1 N-COUNT [usually plural] (药物的) 副作用 The side-effects of a drug are the effects, usually bad ones, that the drug has on you in addition to its function of curing illness or pain. (药物的) 副作用
Side-effects include nausea, tiredness, and dizziness.
副作用包括呕吐、疲倦和头晕。
1 N-COUNT 附带后果 A side-effect of a situation is something unplanned and usually unpleasant that happens in addition to the main effects of that situation. 附带后果