IPA: /ˈbeɪlfəli/
KK: /ˈbeɪlfəli/
In a way that expresses harm or evil intentions; threatening or menacing.
She looked at him balefully, making him feel uneasy.
Balefully → It is formed from "bale" (from Old English "bæle", meaning evil or harm) and the suffix "-ful" (meaning full of). The word "balefully" means full of harm or evil intent.
Think of 'bale' meaning harm, and remember that 'balefully' describes actions or looks that are full of evil or harmful intent.