malignant
adjective/mɐˈliɡnu/medium
ma·lig·no
Definition
Having or showing an intention to cause harm; pernicious, harmful.
The malignant tumor required immediate treatment.
He gave his opponent a malignant look.
Common collocations
malignant tumormalignant influencemalignant lookmalignant spirit
Etymology
Do latim 'malignus' (malévolo, nocivo).