Webster's Revised Unabridged Dictionary · 1913

Robust

Robust , adjective

[Latin robustus oaken, hard, strong, from robur strength, a very hard kind of oak; compare Sanskrit rabhas violence: compare French robuste.]

1.
Evincing strength; indicating vigorous health; strong; sinewy; muscular; vigorous; sound; as, a robust body; robust youth; robust health.
2.
Violent; rough; rude.
While romp-loving miss Is hauled about in gallantry robust. — Thomson
3.
Requiring strength or vigor; as, robust employment. — Locke
Then 'gan the villain wax so fierce and strong, That nothing may sustain his furious force. — Spenser