Synonyms for dud Found 5 synonyms across 3 meanings for “dud”. someone who is unsuccessful (noun) flopwashout an explosion that fails to occur (noun) misfire an event that fails badly or is totally ineffectual (noun) turkeybomb Explore Related Words Rhymes with dudSynonyms for flopSynonyms for washoutSynonyms for misfireSynonyms for turkeySynonyms for bomb Synonym Finder | Rhyme Finder | Poetry Editor