malignant

The definition of malignant is something evil or intending harm, a tumor that is spreading, or a disease that is invasive.

(adjective)

See malignant in Webster's New World College Dictionary

adjective

having an evil influence; malign
wishing evil; very malevolent or malicious
very harmful
very dangerous or virulent; causing or likely to cause death; not benign; specif., cancerous
Obsolete malcontent; rebellious; disaffected

Origin: LL malignans (gen. malignantis), prp. of malignare: see malign

noun

Archaic a malcontent

Related Forms:

See malignant in American Heritage Dictionary 4

adjective

Showing great malevolence; disposed to do evil.
Highly injurious; pernicious.
Pathology
a. Threatening to life; virulent: a malignant disease.
b. Tending to metastasize; cancerous. Used of a tumor.

Related Forms: