dastardly

adjective

das·​tard·​ly ˈda-stərd-lē How to pronounce dastardly (audio)
Synonyms of dastardlynext
1
2
: characterized by underhandedness or treachery
a dastardly attack
a dastardly villain
dastardliness noun
Choose the Right Synonym for dastardly

cowardly, pusillanimous, craven, dastardly mean having or showing a lack of courage.

cowardly implies a weak or ignoble lack of courage.

a cowardly failure to stand up for principle

pusillanimous suggests a contemptible lack of courage.

the pusillanimous fear of a future full of possibility

craven suggests extreme defeatism and complete lack of resistance.

secretly despised her own craven yes-men

dastardly often implies behavior that is both cowardly and treacherous or skulking or outrageous.

a dastardly attack on unarmed civilians

Examples of dastardly in a Sentence

a dastardly attack on innocent civilians his dastardly conduct in a critical moment haunted him for the rest of his life
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Dickinson came close, but was unfortunately outdone by dastardly Internet gamesmanship. Frederick Dreier, Outside, 30 Jan. 2026 Even if the evil swarm cannot be stopped, the good swarm can deflect it and help save you from its dastardly efforts. Lance Eliot, Forbes.com, 29 Jan. 2026 Having witnessed his parents' murder at a young age by the villainous Rufus Buck (Idris Elba), Love and his gang seek out the dastardly criminal, recently freed from prison. Kevin Jacobsen, Entertainment Weekly, 28 Jan. 2026 The dastardly delicious reality show, The Traitors, is back with a vengeance for its fourth season, and my mom and I are devouring every episode while rapid-fire texting each other from our respective couches in Cleveland and Los Angeles. Jamie Allison Sanders, PEOPLE, 16 Jan. 2026 See All Example Sentences for dastardly

Word History

First Known Use

1542, in the meaning defined at sense 1

Time Traveler
The first known use of dastardly was in 1542

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Cite this Entry

“Dastardly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dastardly. Accessed 2 Feb. 2026.

Last Updated: - Updated example sentences
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