When thus perplexed—and cogitating, among other hypotheses, whether the letter might not have been one of those decorations which the white men used to contrive in order to take the eyes of Indians—I happened to place it on my breast.
There are no more uses of "hypothetical" in the book.
Show samples from other sources
He hypothesized the existence of Pluto before its discovery.
The hypothetical situation made it easier for him to think about his problem more logically and less emotionally.