1. in a keen or penetrating way

- she pitied her sister acutely

- acutely aware

Similar word(s): keenly

2. having a rapid onset

- an acutely debilitating virus

3. changing suddenly in direction and degree

- the visor was acutely peaked

- her shoes had acutely pointed toes

Similar word(s): sharp, sharply

4. in a shrewd manner

- he was acutely insightful

Similar word(s): astutely, sagaciously, sapiently, shrewdly

Sentences with acutely as an adverb:

- I minored in physics at university, so am acutely aware of atomic structure.