c.1300, from Anglo-French weyver to abandon, waive, Old French weyver, guever to abandon, give back, probably from a Scandinavian source akin to Old Norse veifa to swing about, from Proto-Germanic *waibijanan (see waif). In Middle English legal language, used of rights, goods, or women. Related: Waived; waiving.
1. : affected with a disease or illness: ill. â sometimes used figuratively. â see also airsick, carsick, seasick. He is at home sick in bed. She is sick with the flu. I'm too sick to go to work. a sick dog. The medicine just made me sicker. The sickest patients are in intensive care.
disease. 1  a disordered or incorrectly functioning organ, part, structure, or system of the body resulting from the effect of genetic or developmental errors, infection, poisons, nutritional deficiency or imbalance, toxicity, or unfavorable environmental factors; illness; sickness; ailment.