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

Growth-stage companies currently forced into private placements at steep discounts and significant dilution to existing shareholders would gain a transparent, public alternative. — Cromwell Coulson, Fortune, 23 Aug. 2026

Crucially, the experiment revealed that while design software is free, the significant expense and bottleneck now lie in the physical synthesis and experimental validation of proteins, underscoring the scarcity of wet-lab capacity. — Jon Markman, Forbes.com, 23 Aug. 2026

Affordability pressures are real, insurance costs remain a significant concern for homeowners and developers alike, and infrastructure has to keep pace with growth for any of this to work long-term. — Justin Onorato, The Orlando Sentinel, 23 Aug. 2026

Samuel is a unique weapon and appears poised to have a significant role in the offense. — Chris Biderman, Sacbee.com, 23 Aug. 2026

Phrases Containing significant

• significant other