So the first task Pierre had to face was one for which he had very little aptitude or inclination—practical business.
Balashev involuntarily flushed with pleasure at the aptitude of this reply, but hardly had he uttered the word Poltava before Caulaincourt began speaking of the badness of the road from Petersburg to Moscow and of his Petersburg reminiscences.
Tikhon, who at first did rough work, laying campfires, fetching water, flaying dead horses, and so on, soon showed a great liking and aptitude for partisan warfare.
There are no more uses of "aptitude" in the book.
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Hyde’s study indicates that girls and boys have the same aptitude for math.
Evidently she had great natural aptitude for her work.