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

The growing conflict near another important global shipping corridor has brought new pressures for markets. — Toqa Ezzidin, Los Angeles Times, 19 Sep. 2026

The experience highlights an important distinction between an EV’s technical ability to travel long distances and the infrastructure needed to make that travel practical. — Kaif Shaikh, Interesting Engineering, 19 Sep. 2026

There are important conversations happening in these online spaces about which artists are shaping the pop landscape, or making decisions that stand out from the onslaught of releases. — Larisha Paul, Rolling Stone, 19 Sep. 2026

The Fed has several tools at its disposal to try to influence the economy — but none is more important than the interest rate. — Scott Horsley, NPR, 19 Sep. 2026