Antonyms of adj robustious

1 sense of robustious

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")

Similarity of adj robustious

1 sense of robustious

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")