baleful
Definitions
Threatening harm; menacing.
Having a harmful or destructive effect.
Examples
The villain cast a baleful glare at the hero as he retreated into the shadows.
A baleful wind howled through the abandoned mansion, chilling everyone to the bone.
She felt the baleful influence of the toxic environment affecting her mental well-being.
Synonyms
menacing sinister malignant harmful ominous deadly pernicious
Antonyms
beneficial harmless kindly benevolent friendly auspicious salutary