seethe /ˈsið/  verb

  • [no object]

    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
    • seething letter

    2 : to be in a state of constant activity

    • We found ourselves in the middle of a seething

    — often used as (be) seething with

    • The island is seething with [=there are very many tourists moving around on the island]
    • The field was seething with
    • His brain was seething with ideas.