Definitions

1. adjective

having or feeling the greatest degree of anger; most angry

“She was the angriest person in the room when the news was announced.”

2. superlative

used to compare three or more things, and indicate that one is the most angry

“He is the angriest of all the siblings after their argument.”

3. noun

the person or thing that is the most angry

“The angriest in the room stood up to confront the speaker.”