myEtymology.com: English etymology of robustious

Etymology of the English word robustious

the English word robustious

derived from the English word robust

derived from the Latin word robustus (of oak; hard, firm; physically mature, grown up; mature in taste)

derived from the Latin word robur (mainstay, bulwark, source of strength; military strength, might, power; oak; strength, firmness, solidity)

derived from the Proto-Indo-European root *reudh-

using the English suffix -ious