1. Noisy and lacking in restraint or discipline
   "a boisterous crowd"
   - rambunctious [N. Amer], robustious, rumbustious [Brit], unruly 
2. Full of rough and exuberant animal spirits
   "boisterous practical jokes"
   - knockabout 
3. Violently agitated and turbulent
   "boisterous winds and waves"
   - fierce, rough

See also: boisterously, boisterousness, disorderly, spirited, stormy

• medicolegal
• mediety
• medieval
• Medieval Greek
• Medieval Latin
• medieval mode
• medieval Schoolman
• medina
• Medinilla
• Medinilla magnifica
• mediocre
• mediocrity
• meditate
• meditation
• meditative
• meditatively
• meditativeness
• Mediterranean
• Mediterranean anaemia
• mediterranean anchovy
• Mediterranean anemia
• Mediterranean cypress
• Mediterranean fever
• Mediterranean flour moth
• Mediterranean fruit fly