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 harder problem is locating and tracking moving targets with sufficient precision, why is why better intelligence, including potentially from partners such as Russia or China, could become an important variable. — Hamidreza Azizi, Time, 29 Aug. 2026

Its arrival also comes at an important moment for American single malt. — Emily Price, Forbes.com, 29 Aug. 2026

Swimming has become an important part of Laura’s life, Cordovez said. — Verónica Egui Brito, Miami Herald, 22 Aug. 2026

Ultimately, the most important part of any business relationship is the effect on sales. — Amelia Lucas, CNBC, 22 Aug. 2026