1. 
[syn: boisterous, rambunctious, robustious, rumbustious, unruly]
The Collaborative International Dictionary of English v.0.48:
Robustious \Ro*bus"tious\, a. [Cf. L. robusteus of oak.]
   Robust. [Obs. or Humorous] --W. Irving.
   [1913 Webster]
         In Scotland they had handled the bishops in a more
         robustious manner.                       --Milton.
   [1913 Webster] -- Ro*bus"tious*ly, adv. --
   Ro*bus"tious*ness, n.
   [1913 Webster]
WordNet (r) 3.0 (2006):
robustious
    adj 1: 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" [syn: boisterous,
           rambunctious, robustious, rumbustious, unruly]