The word robust appears in the following sentences from Moby-Dick:
Chapter 1 > Paragraph 6 > Sentence 10:
Chapter 132 > Paragraph 1 > Sentence 2:
The firmaments of air and sea were hardly separable in that all-pervading azure; only, the pensive air was transparently pure and soft, with a woman's look, and the robust and man-like sea heaved with long, strong, lingering swells, as Samson's chest in his sleep.
Concordance for the word robust from Moby-Dick.