Sentence:  Then away at last they sped to the house or bedside of some elderly and worthy person, and Pym sat fascinated to see how swiftly Rick trimmed his manner to suit theirs, how naturally he slipped into the <WSD>cadences</WSD> and vernacular that put them most at ease, and how the love of God came into his good face when he talked about Liberalism and Masonry and his dear dead father, God rest him, and a firstclass rate of return, ten percent guaranteed plus profits for as long as you're spared. 
Meaning of the word marked with <WSD> tags:  The general inflection or modulation of the voice, or of any sound.