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Webster 1913 Edition

Adj.

[Cf. L.

robusteus

of oak.]

Robust.

[Obs. or Humorous]

W. Irving.

In Scotland they had handled the bishops in a more

robustious

manner.

Milton.

–

Ro-bus′tious-ly

adv.

–

Ro-bus′tious-ness

Noun.

robustious ‎(comparative more robustious, superlative most robustious)

boisterous
- 1602, William Shakespeare, Hamlet, act 3 scene 2
  O, it offends me to the soul to hear a robustious periwig-pated fellow tear a passion to tatters, to very rags, to split the ears of the groundlings, who for the most part are capable of nothing but inexplicable dumb-shows and noise.