"… though I must admit," he read, "that I agree with the Savage in finding civilized infantility too easy or, as he puts it, not expensive enough; and I would like to take this opportunity of drawing your fordship’s attention to …" Mustapha Mond’s anger gave place almost at once to mirth.
There are no more uses of "mirth" in the book.
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It was an evening of many stories and great mirth.
He felt no mirth or humor and wondered if there’d ever be a time again when he would.