Medical Definition of feverish
1: showing symptoms indicating fever (as increased heat and thirst or delirium) : having a fever <the patient is feverish>; specifically : abnormally hot <the child's forehead felt feverish>
2: of or indicating fever <a feverish condition>
3: infected with or tending to cause fever <a damp, feverish, unhealthy spot—R. L. Stevenson>
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