(a particular) disorder of body or mind or of plants

ailment, affliction

the process of infecting or being infected, especially the communication of disease through the air or water; an infectious disease

contamination

(usual short form 'flu') an infectious disease with fever, aches and bad cold

disease that is widespread

disease; illness

disease

a troublesome or destructive thing, animal etc; a child who is a nuisance

person or thing that presents problem

(any kind of) fatal epidemic disease

epidemic

a kind of fatal disease which spreads quickly

disease that is widespread

a substance causing death or harm of absorbed by a living thing (animal or plant)

substance that causes harm, death

very small indication of some bad smell, decay etc; to make (a person) morally bad

contamination, corruption

a person who torments

person or thing that presents problem

a poisonous substance

poison

the poisonous fluid of certain snakes; hate; spite

poison; hating