Third-person singular present of 'dor' (an obsolete or dialectal verb meaning to mock, scoff, or make fun of).
From Middle English 'doren' or 'doren,' possibly related to Dutch and Low German words for mockery, reflecting a lost verb from earlier English.
This disappeared verb reminds us that English has lost thousands of words over centuries—somewhere, someone's grandmother used 'dors' naturally in conversation, and now it exists only in dictionaries.
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