to speak harmful untruths about; to slander

कलंकित करना

English Usage: They malign her reputation without any evidence.

Hindi Usage: वे बिना किसी सबूत के उसकी प्रतिष्ठा को कलंकित करते हैं।

the state or quality of being malign; malevolence

दुष्टता

English Usage: The malignity of his actions was evident to everyone.

Hindi Usage: उनके कार्यों की दुष्टता सबको स्पष्ट थी।