Thesaurus.com
Dictionary.com
Definitions

effect

[ih-fekt] / ɪˈfɛkt /
NOUN
result
Synonyms
STRONGEST
aftermath consequence development event fallout issue outcome ramification reaction repercussion response side effect
STRONG
aftereffect backlash backwash conclusion corollary denouement end eventuality flak follow-up fruit outgrowth precipitate pursuance reflex sequel sequence spin-off upshot waves
WEAK
can of worms causatum chain reaction end product
Antonyms
STRONGEST
beginning cause origin question source
STRONG
commencement start
WEAK
foundation
NOUN
impact, impression
Synonyms
STRONGEST
action fact force influence meaning power reality sense significance strength use
STRONG
clout drift efficacy efficiency enforcement essence execution implementation import imprint mark purport purpose tenor validity vigor weight
Antonyms
STRONGEST
impotence incapacity incompetence powerlessness weakness
STRONG
disregard failure inefficiency neglect unimportance
WEAK
beginning cause commencement foundation origin source start
VERB
carry out, accomplish
Synonyms
STRONGEST
achieve bring about enact enforce implement realize
STRONG
actualize actuate begin buy cause complete conceive conclude consummate create effectuate execute follow through fulfill generate induce initiate invoke make perform procure produce render secure sell unzip yield
WEAK
bring off bring on carry through do a number do one's thing do the job do the trick do to a T draw on get across get to give rise to make it make waves pull it off put across turn out turn the trick
Antonyms
STRONGEST
fail halt hinder lose neglect stop
STRONG
close deny destroy disallow discourage end finish forget give up ignore miss prevent refuse ruin veto
WEAK
overlook

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.

Jon, 59, said the 1975 hit film had a "big effect" on him when he watched it for the first time at the age of nine.

From BBC • Apr. 4, 2026

As a star grows larger, this effect becomes stronger.

From Science Daily • Apr. 4, 2026

New research by the Protest Project, led by sociologists Dana Fisher and Arman Azedi, suggests that No Kings is having a positive effect on encouraging political engagement, efficacy and momentum among participants.

From Salon • Apr. 4, 2026

We are tracking Q1 private domestic final sales growth, which excludes the rebound effect from the end of last fall’s government shutdown, at 2.1%.

From Barron's • Apr. 3, 2026

Whether his kindness had been a ploy, a plot, or whether it had been sincere, the effect was the same.

From "The Brightwood Code" by Monica Hesse

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.