Comparative form of robust: more robust(adjective)
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Use "robuster" in a sentence
"So Tony Cornish, who was _dans le movement_ gently intimated to his hearers that what may be called a robuster tone ruled the spirit of the age."
"My robuster strength of added years, my increased skill, and all I had learned from the books, were responsible for this increase of twenty dollars."
"Fearing the dark, into which he observed all men passed, he built beyond the dark a fairer region, a happier hunting-ground, a jollier and robuster feasting-hall and wassailing-place, and called it variously"