For the nonce he was rather nonplussed but inasmuch as the duty plainly devolved upon him to take some measures on the subject he pondered suitable ways and means during which Stephen repeatedly yawned.
There are no more uses of "nonplussed" in the book.
Show samples from other sources
She was nonplussed by the bluntness of the question.
JOHNSON (Nonplussed) You know, me and you ain’t never agreed about some things, Lena Younger.