only 1 use
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- As he drew near, he slackened speed, took the middle of the street, leaned far over to starboard and rounded to ponderously and with laborious pomp and circumstance—for he was personating the Big Missouri, and considered himself to be drawing nine feet of water.Chapter 2 (41% in)
There are no more uses of "ponderous" in The Adventures of Tom Sawyer.
Typical Usage (best examples)