Definitions

1. noun

a person who is hostile or opposed to someone or something

“The company’s critics were considered its greatest fiends by its management.”

2. noun

a supernatural being that is evil or malignant

“In the fantasy novel, the dark sorcerer was a malevolent fiend from another world.”

3. verb

to be hostile or opposed to someone or something

“The politician was said to have fiended with the opposition party over the years.”

4. verb

to befriend or befriend with someone

“The new employee quickly fiended with her coworkers.”