Final answer:
The literary term employed by Washington Irving in "The Devil and Tom Walker" is irony.
Step-by-step explanation:
The literary term employed by Washington Irving in "The Devil and Tom Walker" is irony. Irony is when there is a contradiction between what is expected and what actually happens. In the story, Tom Walker carries a small Bible and prays loudly in church, which would lead one to expect that he is a pious and religious man. However, this is ironic because Tom Walker is actually known for his greed and selfishness, making his religious acts insincere.
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