seethe /ˈsið/ verb
1 . to feel or show strong emotion (such as anger) even though you try to control it
- He seethed at his brother’s success.
— often + with
- He seethed with anger/jealousy.
- The letter seethes with resentment.
- a seething letter
2 . to be in a state of constant activity
- We found ourselves in the middle of a seething crowd.
— often used as (be) seething with
- The island is seething with tourists. [=there are very many tourists moving around on the island]
- The field was seething with crickets.
- His brain was seething with ideas.