only 1 use
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- As she raised her hand and swore that the evidence she gave would be the truth, the whole truth, and nothing but the truth so help her God, she seemed somehow fragile-looking, but when she sat facing us in the witness chair she became what she was, a thick-bodied girl accustomed to strenuous labor.p. 239.4
strenuous = difficult
There are no more uses of "strenuous" in To Kill a Mockingbird.
Typical Usage (best examples)