Complication
Complication noun - Something that makes a situation more complicated or difficult.
Usage example: the food allergies of the guests were just another complication for the couple trying to plan their wedding reception
Side effect and complication are semantically related. In some cases you can use "Side effect" instead a noun "Complication".
Side effect
Side effect noun - A secondary and usually adverse effect of a drug or therapy.
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Synonyms for Side effect
Complication and side effect are semantically related. Sometimes you can use "Complication" instead a noun phrase "Side effect".
Mutual synonyms
Cite this Source
Side effect and Complication. (2016). Retrieved 2026, August 09, from https://thesaurus.plus/related/complication/side_effect
Complication & Side effect. N.p., 2016. Web. 09 Aug. 2026. <https://thesaurus.plus/related/complication/side_effect>.
Side effect or Complication. 2016. Accessed August 09, 2026. https://thesaurus.plus/related/complication/side_effect.
Google Ngram Viewer shows how "complication" and "side effect" have occurred on timeline