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Showing results for substantial. Search instead for substantiel.
Definitions

substantial

[suhb-stan-shuhl] / səbˈstæn ʃəl /
ADJECTIVE
important, ample
Synonyms
STRONGEST
big consequential considerable extraordinary generous hefty large massive meaningful serious significant sizable solid steady strong valuable vast
STRONG
material
WEAK
abundant big-deal bulky durable firm goodly heavy heavyweight key major-league momentous plentiful principal sound stable stout sturdy superabundant tidy weighty well-built worthwhile
Antonyms
STRONGEST
broken inconsiderable insignificant intermittent little meaningless miniature minor selfish slight small soft tiny trivial unimportant untrustworthy useless weak worthless
WEAK
ethereal impoverished mental poor spiritual unsubstantial
ADJECTIVE
material, real
Synonyms
STRONGEST
actual material positive real solid
WEAK
card-carrying concrete corporeal existent for real honest-to-God honest-to-goodness legit objective phenomenal physical righteous sensible sure-enough tangible true valid visible weighty
Antonyms
WEAK
ethereal impoverished insignificant little mental minor poor small spiritual unimportant unsubstantial
ADJECTIVE
rich
Synonyms
STRONGEST
solid
WEAK
affluent comfortable easy opulent prosperous snug solvent wealthy well well-heeled well-off well-to-do
Antonyms
WEAK
ethereal impoverished insignificant little mental minor poor small spiritual unimportant unsubstantial

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The main driver is a substantial jump in shipping tanker rates, given the oil and gas tanker operator’s exposure to overseas spot contracts and the deleveraging trend following its asset sales in 2021.

From The Wall Street Journal • Apr. 24, 2026

The increase in the rate of buying of calls on individual stocks has been substantial.

From MarketWatch • Apr. 23, 2026

Los Angeles County District Attorney Nathan Hochman and Los Angeles Police Chief Jim McDonnell have said that they have recovered and analysed "a substantial amount of digital and forensic evidence" in the case.

From BBC • Apr. 23, 2026

With Wall Street waiting for a substantial update on efforts between the U.S. and Iran to negotiate a peace deal, earnings season drove the market on Thursday.

From Barron's • Apr. 23, 2026

Further evidence of fixed residence comes from their heavy stone tools, remains of substantial semi-underground houses with signs of remodeling, big village sites of a hundred or more dwellings, and cemeteries.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

Vocabulary lists containing substantial

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