Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “effect”

effect

noun  /ɪˈfekt/ us  

effect noun (RESULT)

[C/U] the result of a particular influence; something that happens because of something else: [C] The medicine had the effect of making me sleepy. [C] Cold water slows hurricane growth, but warm water has the opposite effect. [U] The new management actually has not had much effect on us.

effect noun (USE)

[U] (esp. of rules or laws) official or legal use: Winter parking rules are in effect (= must be obeyed) . All salary increases will take effect (= begin) in January.

effect

verb [T]  /ɪˈfekt/ us  

effect verb [T] (ACHIEVE)

to achieve something and cause it to happen: It will take years to effect meaningful changes in the educational system.
(Definition of effect from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of effect?
Add Cambridge dictionaries to your browser to your website

Definitions of “effect” in other dictionaries

Word of the Day

bright spark

a person who is intelligent, and full of energy and enthusiasm

Word of the Day

Highly delighted, bitterly disappointed, ridiculously cheap: adverbs for emphasis.

by Liz Walter,
October 22, 2014
We often make adjectives stronger by putting an adverb in front of them. The most common ones are very and, for a stronger meaning, extremely: He was very pleased. The ship is extremely large. However, we don’t use very or extremely for adjectives that already have a strong meaning, for example fantastic,

Read More 

life tracking noun

October 20, 2014
the use of one or more devices or apps to monitor health, exercise, how time is spent, etc.

Read More