Find Synonyms

substantial Synonyms

Another word for substantial

Choosing another word for substantial depends on context, so the 22 synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
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• adjective (Context 1)

Of considerable importance, size, worth, or degree.

Usage Example

"The research team made considerable progress toward developing a more efficient solar panel."

Strongest
considerable
significant
sizable
Strong
ample
appreciable
generous
hefty
meaningful

• adjective (Context 2)

Strongly built, solid, or durable in physical structure; or (of a meal) large and filling.

Usage Example

"After hiking through the mountains all morning, they stopped at the inn for a sturdy lunch."

Strongest
sturdy
solid
Strong
hearty
robust
stout
filling
durable

• adjective (Context 3)

Concerning the essential points, core meaning, or actual physical existence of something rather than its superficial form or imaginary nature.

Usage Example

"Although the two drafts differed in phrasing, there was no substantive difference in their conclusions."

Strongest
substantive
Strong
fundamental
essential
material
tangible
concrete
real

Opposites of substantial

The opposite of substantial shifts depending on context. Common opposites include:

insubstantial
flimsy
negligible
trivial
illusory
imaginary
meager
insignificant
See all opposites of substantial

• Nearby Words

substance
substanceless
substandard
substantial
substantially
substantiate
substantiation

Cite this Entry

Wordmom. (2026). Synonyms for Substantial. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/substantial
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