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Noun: side effect  sId i'fekt
  1. A secondary and usually adverse effect of a drug or therapy
    "severe headaches are one of the side effects of the drug"
     
  2. Any adverse and unwanted secondary effect
    "a strategy to contain the side effect from the accounting scandal";
    - fallout

Derived forms: side effects

Type of: consequence, effect, event, issue, outcome, result, upshot

Encyclopedia: Side effect