substantially
adv. degreeadv. by a large or important amount. You use this to show that a change or difference is big enough to really matter.
adv. to a great or significant degree; considerably. Often used to modify verbs of change or adjectives of comparison.
The new laws substantially reduced the cost of living.
The company's profits grew substantially after they expanded their operations into the international market.
While the two proposals appear similar at first glance, they differ substantially in how they allocate resources to rural infrastructure projects over the next decade.
From substantial + -ly.
Typically placed before the verb or adjective it modifies, or at the end of a clause.
The price increased substantial.The price increased substantially.Learners often use the adjective form 'substantial' when an adverb is required to modify a verb.