Find Synonyms
substantially Synonyms
Another word for substantially
Choosing another word for substantially depends on context, so the 22 synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
• adverb (Context 1)
To a great or significant extent; considerably.
Usage Example
"The new manufacturing process has reduced energy consumption considerably over the past year."
Strongest
considerably
significantly
greatly
Strong
markedly
materially
appreciably
noticeably
substantively
• adverb (Context 2)
In essence or main respects; essentially or for the most part.
Usage Example
"Although the two witnesses gave slightly different accounts, their stories were essentially the same."
Strongest
essentially
fundamentally
Strong
basically
largely
by and large
mostly
primarily
virtually
• adverb (Context 3)
In a strong, solid, or sturdy manner.
Usage Example
"The nineteenth-century stone farmhouse was solidly built to withstand harsh winter storms."
Strongest
solidly
sturdily
Strong
soundly
firmly
strongly
robustly
Opposites of substantially
The opposite of substantially shifts depending on context. Common opposites include:
slightly
flimsily
minimally
marginally
weakly
insignificantly
negligibly
superficially
• Nearby Words
Cite this Entry
Wordmom. (2026). Synonyms for Substantially. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/substantially