1. marked by intense agitation or emotion

- worked at a feverish pace

Similar word(s): agitated, hectic

2. of or relating to or characterized by fever

Similar word(s): febrile

3. having or affected by a fever

Similar word(s): ill, sick, feverous

Sentences with feverish as an adjective:

- The illness made him feverish, so they applied cold compresses.

- He worked with feverish excitement.