Meaning of “effect” in the English Dictionary

"effect" in British English

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uk /ɪˈfekt/ us /əˈfekt/

effect noun (RESULT)

B1 [ C or U ] the result of a particular influence:

The radiation leak has had a disastrous effect on/upon the environment.
I tried taking tablets for the headache but they didn't have any effect.
I think I'm suffering from the effects of too little sleep.
She has a lot of confidence, which she uses to good effect (= to her advantage) in interviews.
See also
take effect

C1 to produce or achieve the results you want:

They had to wait ten minutes for the anaesthetic to take effect before they stitched up the cut.
for effect

If you say or do something for effect, you intentionally do it to shock people or attract their attention:

I get the impression that she uses bad language in meetings for effect.
in effect

C2 in fact, or in practice:

So in effect the government have lowered taxes for the rich and raised them for the poor.
to that effect also to the effect that

used to express that what you are reporting is only a short and general form of what was really said:

She said she was unhappy, or words to that effect.
He said something to the effect that he would have to change jobs if the situation continued.

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effect noun (USE)

C2 [ U ] use:

The present system of payment will remain in effect (= be used) until the end of the rental agreement.
When do the new driving laws come into effect?
The new salary increases will take effect (= begin) from January onwards.

More examples

effect noun (THEATRE, ETC.)

effects [ plural ] also special effects

B1 lighting, sounds, and objects that are specially produced for the stage or a film and are intended to make something that does not exist seem real:

This is a movie worth seeing for its effects alone.

effectverb [ T ]

uk /ɪˈfekt/ us /əˈfekt/ formal

(Definition of “effect” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"effect" in American English

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us /ɪˈfekt/

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.

effectverb [ T ]

us /ɪˈfekt/

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)

"effect" in Business English

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effectnoun [ C ]

uk /ɪˈfekt/ us

the result of a particular influence:

have/produce an effect Anti-inflationary measures do not yet seem to be having any effect.
effect of sth (on sth) The effect of the redundancies on morale has been extremely damaging.
see/feel/suffer the effects of sth Businesses are already feeling the effects of the new charges.
an adverse/negative/detrimental effect The slowdown will have a detrimental effect on earnings in the short term.
a significant/profound/dramatic effect
reduce/minimize the effects The problem is, how to deal with the demand for more and better goods while minimizing the effect on the environment.
They questioned whether financial liberalization had had the desired effect (= had done what it was intended to do).
be in effect

to be active or being used:

At that time a total ban on financial transactions was in effect.
come into effect also take effect

to start working or being used:

On April 1 new sales taxes will come into effect.
The new credit regulations will take effect next year.
in effect

in fact, or in practice:

The ruling meant that, in effect, the company was allowed to continue to do business as usual.
put/bring sth into effect

to start using something or making it work:

The aim is to develop new management strategies and put them into effect.
with immediate effect/with effect from

used to describe a change that happens immediately or from a particular date:

She was appointed chief executive with immediate effect.
The company has announced the appointment of 13 new partners, with effect from 1 July 2012.

[ plural ] LAW a person's possessions:

After his death, an inventory was taken of his effects.
Company relocation policies may cover the cost of insuring personal effects in transit.

effectverb [ T ]

uk /ɪˈfekt/ us

to cause something to happen:

The transfer of a business is governed or effected by the law of the country in which the business is situated.

(Definition of “effect” from the Cambridge Business English Dictionary © Cambridge University Press)

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