Accompanying the gravity of being a hunted man, Langdon was starting to feel the ponderous weight of responsibility, the prospect that he and Sophie might actually be holding an encrypted set of directions to one of the most enduring mysteries of all time.
There are no more uses of "ponderous" in the book.
Show samples from other sources
The findings were presented in a ponderous three-volume report.
We’ve been working through the ponderous regulatory approval process for the last two years.