side effect
noun
any effect of a drug, chemical, or other medicine that is in addition to its intended effect, especially an effect that is harmful or unpleasant.
side effects
-
pluralof side effect.plural
The grammatical form denoting more than one person, place, thing, or idea.
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.
Conventional IL-2 treatment, however, can produce serious side effects and can also stimulate immune cells that actually weaken the antitumor response.
From Science Daily ● Aug. 19, 2026
What are the side effects of weight loss drugs?
From BBC ● Aug. 17, 2026
“It’s some of the unintended side effects of the training,” said Nicolas Suzor, an Australian law professor and member of Meta Platforms’ independent oversight board.
From The Wall Street Journal ● Aug. 13, 2026
Whatever the case, higher interest rates also have side effects.
From MarketWatch ● Aug. 11, 2026
There are practical side effects to all this costly effort.
From "A Short History of Nearly Everything" by Bill Bryson
