Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “aftereffect”


noun [C usually pl]    /ˈæf·tər·ɪˌfekt/
a result of a condition or event: Headaches are an aftereffect of this sort of accident.
(Definition of aftereffect noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of aftereffect

Word of the Day


a document given to students or reporters which contains information about a particular subject

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More