The longing was with him day and night, an incessant undefinable craving, like the sudden whim of a sick man for food or drink once tasted and long since forgotten.
I only meant that, after the decided stand Mamma took about its being Ellen’s duty to go back to her husband, it seems strange that she should be seized with this sudden whim to see her, when there are half a dozen other grandchildren that she might have asked for.
There are no more uses of "whim" in the book.
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They flew to Paris on a whim.
This is the devilish thing about foreign affairs: they are foreign and will not always conform to our whim.