1. an evil supernatural being

Similar word(s): daemon, daimon, devil, fiend

Definition categories: person

2. a cruel wicked and inhuman person

Similar word(s): devil, fiend, monster, ogre

Definition categories: person

3. someone extremely diligent or skillful

- he worked like a demon to finish the job on time

- she's a demon at math

Definition categories: person, actor, doer, worker

Sentences with demon as a noun:

- The demon of stupidity haunts me whenever I open my mouth.

- He’s a demon at the card tables.

- the demon drink