To steal something small or of little value in a sneaky way, especially by taking it without permission.
Origin uncertain, possibly from Middle English or Old English roots, though the exact source is debated among etymologists. The word may relate to old terms for deception or theft, and has been used since at least the 1600s.
Filch became famous from the Harry Potter character Argus Filch, but the word itself is actually older than most realize—Shakespeare used it, and it specifically means stealing small items in a sneaky way, distinguishing it from robbery.
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