Synonyms of dastardly in English:


See US English definition of dastardly

See UK English definition of dastardly

See Spanish definition of ruin


1‘a dastardly plan was hatched to kidnap him’

wicked, evil, iniquitous, heinous, villainous, diabolical, diabolic, fiendish, vicious, murderous, barbarous, cruel, black, dark, rotten, nefarious, vile, foul, monstrous, shocking, outrageous, atrocious, abominable, reprehensible, despicable, execrable, corrupt, degenerate, reprobate, sordid, depraved, dissolute, bad, base, mean, low, dishonourable, dishonest, unscrupulous, unprincipled, underhand, roguish
informal crooked, low-down, stinking, dirty, shady, rascally, scoundrelly
British informal beastly, not cricket
Law malfeasant
rare egregious, flagitious

noble, praiseworthy