And so, after having composed, struck out, rejected, added to, unmade, and remade a multitude of names out of his memory and fancy, he decided upon calling him Rocinante, a name, to his thinking, lofty, sonorous, and significant of his condition as a hack before he became what he now was, the first and foremost of all the hacks in the world.
The prodigious scarecrow obeyed, and standing up, removed the veil from his face and disclosed the most enormous, the longest, the whitest and the thickest beard that human eyes had ever beheld until that moment, and then fetching up a grave, sonorous voice from the depths of his broad, capacious chest, and fixing his eyes on the duke, he said: "Most high and mighty senor, my name is Trifaldin of the White Beard; I am squire to the Countess Trifaldi, otherwise called the Distressed…
There are no more uses of "sonorous" in the book.
Show samples from other sources
The candidate discussed weighty matters in rich, sonorous tones.
I prefer traditional sonorous chords to the dissonant chords with which she likes to experiment.