Boisterous is a word used to describe someone spirited, loud, and slightly out of control — like someone with a spring in their step and a song in their heart singing to strangers on the street.

Boisterous means "loud, clamorous, and unrestrained." Think of children on a playground or a lively party or a litter of puppies as boisterous. This word, which comes from Middle English, can also refer to very intense storms. You could call a hurricane boisterous, but you will most likely hear this word used to describe people.

Definitions of boisterous
  1. adjective
    full of rough and exuberant animal spirits
    boisterous practical jokes”
    synonyms: knockabout
    displaying animation, vigor, or liveliness
  2. adjective
    noisy and lacking in restraint or discipline
    “a boisterous crowd”
    synonyms: rambunctious, robustious, rumbustious, unruly
    undisciplined and unruly
  3. adjective
    violently agitated and turbulent
    boisterous winds and waves”
    synonyms: fierce, rough
    (especially of weather) affected or characterized by storms or commotion
Word Family