aftereffect

noun

af·​ter·​ef·​fect ˈaf-tər-ə-ˌfekt 

: an effect that follows its cause after an interval

Synonyms of aftereffect

• outcome
• result
• resultant
• consequence
• aftermath
• effect

Examples of aftereffect in a Sentence

in the U.S. slavery was abolished in 1865, but its aftereffects remained keenly felt long afterwards

Recent Examples on the Web

But its costs and aftereffects will likely linger for years. — Scott Horsley, NPR, 17 June 2026

Her women aren’t triumphing so much as sidestepping death, and forced to live with their choices’ aftereffects for years to come. — Los Angeles Times, 26 Feb. 2026

The difference between the event and the signature food from just down the street, however, lies in its aftereffect. — Joseph Hoyt, Dallas Morning News, 28 Feb. 2026

Checkmarx isn’t the only security company to suffer the aftereffects of the Trivy breach. — Dan Goodin, ArsTechnica, 29 Apr. 2026

Word History

Etymology

after- + effect entry 1

First Known Use

1656, in the meaning defined above

Rhymes for aftereffect

• interconnect
• affect
• aspect
• bedecked
• bisect
• collect
• connect
• correct
• deflect
• detect
• direct
• dissect

Kids Definition

aftereffect

noun

af·​ter·​ef·​fect -ə-ˌfekt 

: an effect that arises after the first or immediate effect has decreased or disappeared

a medicine with no noticeable aftereffects

Medical Definition

aftereffect

noun

af·​ter·​ef·​fect ˈaf-tə-ri-ˌfekt 

1

: an effect that follows its cause after an interval

the aftereffects of surgery

2

: a secondary result especially in the action of a drug coming on after the subsidence of the first effect