undoing.
The act of loosening or unfastening
Meaning & usage
The act of loosening or unfastening
Ruin; defeat, (also) that which causes defeat or ruin.
In the end, his jealousy was his undoing.
Annulment; reversal
Where this word comes from
From Middle English undoinge, undoynge, ondoynge; equivalent to undo + -ing.
present participle and gerund of undo
Where this word comes from
From Middle English undoynge, undoand, from Old English undōnde (“undoing”), from Proto-Germanic *andadōndz, present participle of *andadōną (“to undo”). Cognate with Dutch ontdoend (“undoing”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.