Synonyms of important

important

adjective

im-ˈpȯr-tᵊnt 

1

as in major

having great meaning or lasting effect

the discovery of penicillin was a very important event in the history of medicine

Synonyms & Similar Words

• major
• significant
• historic
• big
• meaningful
• much
• substantial
• tectonic
• exceptional
• monumental
• momentous
• pivotal
• distinguished
• remarkable
• eventful
• consequential
• crucial
• noteworthy
• decisive
• outstanding
• notable
• prominent
• material
• valuable
• distinctive
• great
• earthshaking
• strategic
• earth-shattering
• serious
• weighty
• worthy
• seminal
• worthwhile
• impressive
• key
• essential
• fatal
• critical
• famous
• fateful
• earnest
• vital
• sincere
• prestigious
• central
• eminent
• all-important
• illustrious
• grave
• noble
• notorious
• renowned
• heavy
• preeminent

Antonyms & Near Antonyms

• unimportant
• small
• trivial
• insignificant
• little
• minor
• negligible
• inconsequential
• inconsiderable
• slight
• trifling
• worthless
• petty
• unknown
• obscure
• paltry
• anonymous
• nameless
• uncelebrated

2

as in influential

having great power or influence

Rachel Carson was an important figure in the environmental movement

Synonyms & Similar Words

• influential
• significant
• powerful
• strong
• prominent
• potent
• mighty
• senior
• outstanding
• great
• heavy
• effective
• top
• distinguished
• efficient
• able
• notable
• famous
• capable
• heavy-duty
• celebrated
• noteworthy
• dominant
• high-level
• puissant
• competent
• prestigious
• renowned
• robust
• notorious
• dynamic
• eminent
• illustrious
• noble
• vigorous
• famed
• authoritarian
• energetic
• despotic
• autocratic
• tyrannical
• dictatorial
• forceful
• magisterial
• preeminent
• high-powered

Antonyms & Near Antonyms

• unimportant
• little
• insignificant
• weak
• powerless
• helpless
• impotent
• feeble
• unknown
• flimsy
• obscure
• infirm
• frail
• anonymous
• ineffective
• incapable
• unfit
• nameless
• incompetent
• unqualified
• unskilled
• inept
• uncelebrated
• unskillful
• inexpert

3

as in arrogant

having a feeling of superiority that shows itself in an overbearing attitude

an important businessman who always expects special treatment wherever he goes

Synonyms & Similar Words

• arrogant
• superior
• dominant
• cavalier
• proud
• assumptive
• high-and-mighty
• uppity
• masterful
• pretentious
• presumptuous
• bumptious
• uppish
• supercilious
• huffish
• domineering
• toplofty
• pompous
• dominating
• presuming
• sniffy
• imperious
• haughty
• high-hat
• lofty
• huffy
• high-handed
• peremptory
• highfalutin
• chesty
• smug
• self-assertive
• authoritarian
• patronizing
• overweening
• magisterial
• saucy
• bossy
• impudent
• snobbish
• pontifical
• disdainful
• condescending
• lordly
• vain
• stiff-necked
• snobby
• self-asserting
• vainglorious
• impertinent
• egocentric
• bombastic
• boastful
• snooty
• narcissistic
• cocky
• complacent
• uninhibited
• self-affected
• hubristic
• conceited
• self-centered
• egotistic
• blusterous
• egoistic
• prideful
• braggy
• pontificating
• bragging
• self-pleased
• swaggering
• immodest
• self-applauding
• forward
• extroverted
• blustery
• self-complacent
• self-satisfied
• stuck-up
• unreserved
• self-flattering
• orgulous
• brash
• self-conceited
• self-loving
• braggart
• self-promoting

Antonyms & Near Antonyms

• modest
• humble
• unpretentious
• lowly
• timid
• subdued
• shy
• shrinking
• passive
• bashful
• introverted
• diffident
• unarrogant
• unobtrusive
• sheepish
• compliant
• unassuming
• deferential
• quiet
• demure
• mousy
• submissive
• unaggressive
• meek
• overmodest
• yielding
• acquiescent
• unassertive
• self-critical
• reserved
• cringing
• retiring
• self-doubting
• cowering

4

as in proud

having too high an opinion of oneself

oh, you're so important—you think the world revolves around you

Synonyms & Similar Words

• proud
• arrogant
• smug
• vain
• consequential
• confident
• vainglorious
• selfish
• assured
• self-important
• complacent
• biggety
• conceited
• egotistic
• egoistic
• bigheaded
• domineering
• pompous
• prideful
• swellheaded
• self-satisfied
• stuck-up
• fastuous
• self-conceited
• overweening
• snobbish
• bombastic
• assumptive
• toplofty
• superior
• high-and-mighty
• boastful
• uppity
• snobby
• cocky
• cavalier
• masterful
• braggy
• bumptious
• uppish
• bragging
• supercilious
• snooty
• disdainful
• pontifical
• blusterous
• pretentious
• self-opinionated
• overconfident
• haughty
• high-hat
• swaggering
• presumptuous
• huffy
• blustery
• self-assertive
• lofty
• self-confident
• high-handed
• holier-than-thou
• imperious
• chesty
• self-assured
• peremptory
• presuming
• braggart
• patronizing
• highfalutin
• self-affected
• self-centered
• condescending
• self-applauding
• self-gratulatory
• lordly
• self-adulatory
• self-contented
• self-asserting
• self-engrossed
• self-dramatizing
• self-glorifying
• self-congratulatory
• self-promoting

Antonyms & Near Antonyms

• modest
• humble
• diffident
• egoless
• timid
• self-critical
• uncomplacent
• meek
• unassertive
• unassuming
• unpretentious
• self-reproachful
• down-to-earth
• self-distrustful
• self-reproving
• shrinking
• self-doubting
• shy
• introverted
• bashful
• retiring
• sheepish
• unarrogant
• overmodest
• mousy
• demure

Example Sentences

Recent Examples of important

California’s 2026 legislative session brought several important changes for community associations. — Kelly G. Richardson, Oc Register, 7 Nov. 2026

Hurley said winning this game was important, considering the brutally tough non-conference schedule that awaits UConn in the coming weeks, including matchups with Arizona, Duke, Illinois, Kansas and Virginia. — Matt Langone, Boston Herald, 7 Nov. 2026

Known for her charcoal drawings, abstract paintings of New York City skyscrapers, and depictions of the nature, particularly in the American southwest, she is considered one of the most important artists of the 20th century. — CBS News, 7 Nov. 2026

Our work is too important to be distracted by critics or political opportunists. — Voice Of The People, New York Daily News, 7 Nov. 2026