adverb
substantially
adverb
1
To a large or significant degree.
"Sales increased substantially after the marketing campaign."
"The new engine is substantially quieter than the old one."
2
In its main or essential parts, even if not in every detail.
"The two contracts are substantially the same."
How to Use Substantially
Learner’s notesIn plain EnglishBy a lot, or in all the important ways.
Common pairings
substantially increase
substantially reduce
substantially similar
Word Forms
more substantially comparative, most substantially superlative
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Sales increased _____ after the marketing campaign.
Etymology
From substantial plus the adverb-forming suffix -ly.