I'm seething with anger.

Meaning

I'm extremely angry.

Examples

• John: I'm absolutely furious at what he did!
• Alice: I can imagine. <b>I'm seething with anger</b> just hearing about it!
• John: It's making it hard to think straight.
• Alice: I understand. When you're <b>I'm seething with anger</b>, it's difficult to stay calm.