Synonyms of significant

significant

adjective

sig-ˈni-fi-kənt 

1

as in major

having great meaning or lasting effect

made a significant change in the procedure for applying for citizenship

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

2

as in indicative

indicating something

the town's generous library budget is significant of the value its residents place on learning

Synonyms & Similar Words

• indicative
• reflective
• telltale
• characteristic
• signifying
• denotative
• symbolic
• denoting
• symptomatic
• referring
• allusive
• expressive
• demonstrative
• alluding
• exhibiting
• suggestive
• implying
• hinting
• insinuating
• connoting

3

as in influential

having great power or influence

a producer who is playing a significant role in the creation of the new film

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

4

as in considerable

sufficiently large in size, amount, or number to merit attention

paid a significant amount of money for the movie rights to the book

Synonyms & Similar Words

• considerable
• substantial
• sizable
• major
• tremendous
• huge
• good
• substantive
• big
• great
• respectable
• handsome
• massive
• healthy
• goodly
• tidy
• largish
• biggish
• enormous
• hefty
• colossal
• voluminous
• immense
• gigantic
• bulky
• monumental
• oversize
• prodigious
• outsize
• astronomical
• mammoth
• whopping
• monstrous
• titanic
• herculean
• jumbo
• hulking
• elephantine
• bumper
• king-size

Antonyms & Near Antonyms

• insignificant
• negligible
• nominal
• inconsiderable
• inconsequential
• trivial
• unimportant
• insubstantial
• marginal
• slight
• trifling
• petty
• small
• puny
• meager
• paltry
• minute
• little
• tiny
• piddling
• measly
• picayune
• undersized
• diminutive
• pocket
• smallish
• miniature
• picayunish
• bitty
• pocket-size
• pygmy
• pint-size

5

as in suggestive

clearly conveying a special meaning (as one's mood)

after remarking that tardiness was on the rise, our boss cast a significant glance my way

Synonyms & Similar Words

• suggestive
• meaningful
• revealing
• eloquent
• expressive
• meaning
• reminiscent
• revelatory
• pregnant
• vivid
• graphic
• pictorial
• evocative
• rich
• redolent
• flavorful
• weighty
• sententious
• full-bodied

Antonyms & Near Antonyms

• blank
• vacant
• deadpan
• inexpressive
• expresionless
• unexpressive

Example Sentences

Recent Examples of significant

Asian brands first make significant inroads into the US market during the oil price shock 50 years ago, and were clearly helped by the latest gasoline price spike. — Chris Isidore, CNN Money, 2 Oct. 2026

Brazil's 2025 prosecution and conviction of Jair Bolsonaro over the coup plot marked a significant test of its democratic institutions. — Catherine Osborn, NPR, 2 Oct. 2026

Most significant, the Braves had the best record of any National League opponent against the Dodgers this season, winning five of six games. — Los Angeles Times, 2 Oct. 2026

The game is culturally significant in Mexico, where it is usually played within families, often with several generations playing together. — Sanat Pai Raikar, Encyclopedia Britannica, 2 Oct. 2026

Phrases Containing significant

• significant other