Dastardly, adjective. Example: A dastardly plan was hatched | The Thesaurus

Dastardly, adjective.

Example: A dastardly plan was hatched to kidnap him.

Synonyms:

1. 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
2. (informal) crooked, low-down, stinking, dirty, shady, rascally, scoundrelly
3. (British • informal) beastly, not cricket
4. malfeasant
5. (rare) egregious, flagitious

Antonyms:

1. noble, praiseworthy
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