side effect noun
plural ∼ -fects [count] 1 : an often harmful and unwanted effect of a drug or chemical that occurs along with the desired effect
▪ Nausea and diarrhea are the side effects of the drug. ▪ the harmful side effects of using chemicals to kill insects 2 : a result of an action that is not expected or intended
▪ The merger created positive side effects for both companies.
▪ Nausea and diarrhea are the side effects of the drug. ▪ the harmful side effects of using chemicals to kill insects
▪ The merger created positive side effects for both companies.
