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Definitions

important

[im-pawr-tnt] / ɪmˈpɔr tnt /
ADJECTIVE
significant
Synonyms
STRONGEST
big major serious significant valuable weighty
STRONG
consequential earnest epochal far-reaching front-page historic material momentous of consequence of moment of substance page-one paramount relevant salient seminal substantial
WEAK
decisive determining fateful grave heavy of note
Antonyms
STRONG
inappreciable insignificant little negligible small trifling trivial unimportant unsubstantial
ADJECTIVE
eminent, influential, outstanding
Synonyms
STRONGEST
eminent esteemed great influential of note outstanding powerful prominent
STRONG
big-time celebrated distinguished famous foremost grand high-level high-profile high-ranking high-up preeminent
WEAK
illustrious major-league notable noted
Antonyms
STRONGEST
common ordinary
WEAK
little normal small unknown
ADJECTIVE
major
Synonyms
STRONGEST
chief key leading major primary principal
STRONG
ascendant central staple
Antonyms
STRONG
auxiliary marginal minor secondary
ADJECTIVE
crucial
Synonyms
STRONGEST
critical crucial essential imperative necessary urgent vital
STRONG
pivotal
WEAK
pressing
Antonyms
STRONGEST
inessential uncritical unnecessary
WEAK
nonessential optional trivial
ADJECTIVE
having personal or emotional value
Synonyms
STRONG
cherished dear mattering much meaningful priceless valued
Antonyms
STRONG
meaningless

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.

"Conservation of these animals is so important to protect them for the future."

From BBC • Apr. 5, 2026

This mix indicates that the sanctuary likely served as an important regional center where multiple deities were honored.

From Science Daily • Apr. 5, 2026

About two weeks after the start of the Iran war, Dow Chief Executive Jim Fitterling told investors something they hadn’t heard in a while about one of the company’s most important products.

From The Wall Street Journal • Apr. 5, 2026

Nia Rhys Jones from Anglesey has worked in the tourism sector for more than 30 years and said Easter is an important period marking the official start of the holiday season.

From BBC • Apr. 5, 2026

“See how Greg struts around like he owns the forest? Well, any animal who doesn’t know better buys into that lie. And there’s Dot, always following, trying to feel important too.”

From "The Undead Fox of Deadwood Forest" by Aubrey Hartman

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