Here be it said, that this pertinacious pursuit of one particular whale, continued through day into night, and through night into day, is a thing by no means unprecedented in the South sea fishery.
And still as Ahab glided over the waves the unpitying sharks accompanied him; and so pertinaciously stuck to the boat; and so continually bit at the plying oars, that the blades became jagged and crunched, and left small splinters in the sea, at almost every dip.
There are no more uses of "pertinacious" in the book.
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as pertinacious as a bulldog’s mouth
the most vocal and pertinacious of all the critics