The adverb has 4 meanings:
Meaning #1:
in an aggressive manner
Synonym: aggressively
Meaning #2:
in a well delineated manner
Synonym: crisply
Derived from adjective: sharp (meaning #1)
Meaning #3:
changing suddenly in direction and degree
Synonym: sharp
Derived from adjective: sharp (meaning #13)
Meaning #4:
very suddenly and to a great degree
Synonym: precipitously
