drastically
adv. manneradv. in a way that is very sudden, extreme, and noticeable. You use this to describe a change that is much bigger than usual.
adv. in a manner that is extreme, severe, or sudden in effect. Often used to modify verbs of change or adjectives describing a shift in state.
The weather changed drastically overnight.
The company had to cut costs drastically after losing their biggest client last month.
While the initial reforms were modest, the political landscape changed drastically once the new legislation was fully implemented across the rural provinces.
From drastic + -ally.
Typically follows the verb it modifies or precedes the adjective it qualifies.
The prices drastically.The prices dropped drastically.Drastically is an adverb and needs a verb to modify; it cannot function as the verb itself.