Thesaurus.com
Dictionary.com
Showing results for side effect. Search instead for seeeffekt.
Definitions

side effect

NOUN
adverse or unwanted secondary effect
Synonyms
STRONGEST
aftereffect reaction
WEAK
aftermath aftertaste by-product carry-over concomitant corollary leftover offshoot secondary response side issue sidebar spinoff

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Partaking in them is not without risk—ozone therapy, for example, has the potential side effect of something called an air embolism, which can lead to a stroke or heart attack.

From Slate • Mar. 30, 2026

The losses of the past three years are a side effect of the central bank’s aggressive campaign to jack up interest rates starting in 2022 to combat high inflation.

From The Wall Street Journal • Mar. 25, 2026

Researchers at Pfizer were studying a drug intended to treat angina when participants reported an unexpected side effect.

From Science Daily • Mar. 14, 2026

Jonas’ lymphoma developed as a side effect of the medication he was taking for Crohn’s disease.

From Los Angeles Times • Mar. 13, 2026

It’s a side effect of your magical medical cocktail.

From "Challenger Deep" by Neal Shusterman