late 15c., past participle adjective from Middle English verb disesen "to make uneasy; inflict pain" (mid-14c.), later "to have an illness or infection" (late 14c.); "to infect with a disease" (late 15c.), from disease (n.).
1. The arteries are diseased and a transplant is the only hope.
2. Clear away dead or diseased plants.
3. His diseased bladder left him incontinent.
4. the diseased social system
5. The diseased tissue can be easily invaded by these microorganisms.