Antonyms of adj boisterous

3 senses of boisterous

Sense 1
boisterous, rambunctious, robustious, rumbustious, unruly -- (noisy and lacking in restraint or discipline; "a boisterous crowd"; "a social gathering that became rambunctious and out of hand"; "a robustious group of teenagers"; "beneath the rumbustious surface of his paintings is sympathy for the vulnerability of ordinary human beings"; "an unruly class")

INDIRECT (VIA disorderly) -> orderly -- (devoid of violence or disruption; "an orderly crowd confronted the president")

Sense 2
boisterous, knockabout -- (full of rough and exuberant animal spirits; "boisterous practical jokes"; "knockabout comedy")

INDIRECT (VIA spirited) -> spiritless -- (lacking ardor or vigor or energy; "a spiritless reply to criticism")

Sense 3
boisterous, fierce, rough -- (violently agitated and turbulent; "boisterous winds and waves"; "the fierce thunders roar me their music"- Ezra Pound; "rough weather"; "rough seas")

INDIRECT (VIA stormy) -> calm -- ((of weather) free from storm or wind; "calm seas")

Similarity of adj boisterous

3 senses of boisterous

Sense 1
boisterous, rambunctious, robustious, rumbustious, unruly -- (noisy and lacking in restraint or discipline; "a boisterous crowd"; "a social gathering that became rambunctious and out of hand"; "a robustious group of teenagers"; "beneath the rumbustious surface of his paintings is sympathy for the vulnerability of ordinary human beings"; "an unruly class")
       => disorderly (vs. orderly) -- (undisciplined and unruly; "disorderly youths"; "disorderly conduct")

Sense 2
boisterous, knockabout -- (full of rough and exuberant animal spirits; "boisterous practical jokes"; "knockabout comedy")
       => spirited (vs. spiritless) -- (displaying animation, vigor, or liveliness)

Sense 3
boisterous, fierce, rough -- (violently agitated and turbulent; "boisterous winds and waves"; "the fierce thunders roar me their music"- Ezra Pound; "rough weather"; "rough seas")
       => stormy (vs. calm) -- ((especially of weather) affected or characterized by storms or commotion; "a stormy day"; "wide and stormy seas")