balefully (adverb)

1. In the dark and stormy night, the villain looked at the hero balefully, promising revenge.

2. With a baleful gaze, the supervillain unleashed his destructive powers upon the city.

3. The ancient demon stared balefully at the worshippers, ready to wreak havoc.

4. Why did the ghost attend therapy? Because it wanted to learn how to haunt balefully!