Originally a low-value coin used in parts of the Low Countries and Scotland, the doit became a byword for a negligible sum. In English literature, “not worth a doit” expresses utter worthlessness or contempt. Poets exploit this idiom to dramatise disdain, to diminish a supposedly great object, or to highlight the gap between appearances and real value. Its archaic sound lends colour and rhythm, and it often appears in character speech to mark rustic, regional, or older voices who measure worth in hard, jangling coppers.

Doit commonly appears in idioms like “not worth a doit,” signalling utter worthlessness. Because the coin itself was of tiny value, it serves poets as an economical way to belittle pretensions, broken promises, or trivial anxieties. The word’s archaic sound reinforces historical or rustic atmosphere and can suit comic or satirical verse. It pairs well with other low-value coins (bawbee, farthing, sou) in catalogues of trifles. When teaching, you can highlight how such terms show language preserving economic history—students see how forgotten coins survive mainly in figurative expressions.