1. In constant agitation
   "lovers and madmen have such seething brains"; "a seething flag-waving crowd filled the streets"; "a seething mass of maggots"
    
2. Feeling or showing extreme anger
   "He was seething when he saw the damage";
   - irate, ireful [archaic], apoplectic [informal], furious, fuming, hopping mad [informal], steaming [informal], livid

1. Feel intense but often unexpressed anger or agitation
   "The customer was seething with anger";
   - boil
    
2. Boil vigorously
   "The liquid was seething";
   - roll
    
3. Foam as if boiling
   "a seething liquid"
    
4. Be noisy with activity
   "This office is seething with activity";
   - hum, buzz

See also: agitated, angry, cross

Type of: boil, churn, effervesce, experience, feel, fizz, foam, form bubbles, froth, go, moil [N. Amer], roil, sound, sparkle

Encyclopedia: Seething