greatly
adv. degreeadv. to a large degree or by a lot. You use this to show that an action or feeling is very strong.
adv. to a considerable extent or degree; very much. Often used to modify verbs related to change, appreciation, or influence.
The new laws will greatly affect how we do business.
The quality of the local schools greatly influenced their decision to move to this neighborhood.
While the initial results were promising, the final outcome of the experiment was greatly hindered by a series of unforeseen technical malfunctions in the laboratory equipment.
From Middle English gretly, gretely, gretliche, greteliche, equivalent to great + -ly.
Typically placed before the verb it modifies or at the end of a clause; it rarely precedes adjectives, where 'very' or 'extremely' is preferred.
I am greatly tiredI am very tiredGreatly usually modifies verbs of action or change rather than simple adjectives of state.