baneful

Definitions

Causing distress, death, or ruin; destructive.

Harmful or poisonous in nature or effect.

Examples

The baneful influence of the corrupt official eventually led to the collapse of the local government.

Excessive screen time can have a baneful effect on a child's ability to focus during school hours.

Synonyms

harmful destructive pernicious detrimental noxious malignant baleful

Antonyms

beneficial harmless salutary advantageous wholesome helpful benign