Added 10 October 2026
undo
/ʌnˈduː/ verb
In Latin: abrogo, destruo Wiktionary
verb Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about undo at Wordnik → Where our words come from →
Origin
From Middle English undōn, from Old English ondōn, from Proto-West Germanic *andadōn (“to undo”), equivalent to un- + do. Cognate with West Frisian ûndwaan, ûntdwaan (“to undo; rid”), Dutch ontdoen (“to undo”).
From Wiktionary, via Kaikki.org (CC BY-SA)