If you're ever feeling sick but not running a fever, then you're afebrile, meaning that you're fever free!
Doctors and medical professionals use the term afebrile to describe someone who isn’t running a fever, even if they have other symptoms. The word comes from the Latin a-, meaning "without," and febris, meaning "fever." It’s a good sign when someone becomes afebrile after taking medicine because it means that the treatment is working.