Definition of dastardly in English:



humorous, dated
  • Wicked and cruel.

    ‘pirates and their dastardly deeds’
    • ‘Have you ever wondered why these evil and dastardly beings might be interested in us?’
    • ‘She goes undercover at the Miss United States Pageant in Texas to foil the dastardly deeds of an urban terrorist, who plans to blow the event to bits.’
    • ‘The dastardly villains are the ones in the red uniforms who speak as if they've just swallowed a plum.’
    • ‘The debt recovery agency that carried out the dastardly deed is not expected to have its contract renewed.’
    • ‘Can they be so dastardly and despicable as to attack the president during a presidential campaign?’
    • ‘It is a classic tale of good and evil with an orphan hero, a plucky girl to befriend him, dastardly villains, a bit of a twist and an element of magic.’
    evil, sinful, immoral, wrong, morally wrong, wrongful, bad, iniquitous, corrupt, black-hearted, ungodly, unholy, irreligious, unrighteous, sacrilegious, profane, blasphemous, impious, base, mean, vile
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Mid 16th century (in the sense ‘dull or stupid’): from dastard in the obsolete sense ‘base coward’.