It took her a moment to remember that the innocuously courteous figure she saw bowing to her with a standard smile of welcome was the assistant manager of the apartment house.
He looked at the door with a sensation of malevolent triumph at the thought of all those voices being defeated by the innocuous figure of his secretary, a young man expert at nothing but the art of evasion, which he practiced with the gray, rubber limpness of the amoral.
There are no more uses of "innocuous" in the book.
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She made some innocuous comments while being careful not to hurt anyone’s feelings.
Her comments were innocuous, but he quoted them out of context to make them appear sinister.