Thesaurus.com
Dictionary.com
Showing results for side effect. Search instead for sidoeffekten.
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.

While the show may not have anticipated touch screens, it nailed a key side effect of constant use of gadgets: repetitive-motion injuries.

From The Wall Street Journal • Mar. 30, 2026

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

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

From Los Angeles Times • Mar. 13, 2026

Doctors have also observed an unusual side effect.

From Science Daily • Mar. 1, 2026

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

From "Challenger Deep" by Neal Shusterman