seethe

(verb) be noisy with activity. Synonyms: hum, buzz. Examples: "This office is buzzing with activity."

(verb) be in an agitated emotional state. Synonyms: boil. Examples: "The customer was seething with anger."

(verb) foam as if boiling. Examples: "A seething liquid."

(verb) boil vigorously. Synonyms: roll. Examples: "The liquid was seething." "The water rolled."