Malignant

ma-lig′nant, adj. disposed to do harm or to cause suffering: malign: acting maliciously: actuated by great hatred: tending to cause death.— n. a name applied by the Puritan party to one who had fought for Charles I. in the Civil War.— n. Malig′nancy , Malig′nance , state or quality of being malignant.— adv. Malig′nantly . [L. malignans , pr.p. of malignāre , to act maliciously.]