Synonyms of dastardly

1 Syllable
vile, low, mean, base
2 Syllables
craven, recreant, crumby, cravens, wussy, wimpish, crumbier
3 Syllables
cowardly, shameful, ignoble, cowhearted, poltroonish
4 Syllables
contemptible, underhanded, despicable, chicken-hearted, pigeonhearted, undignified
5 Syllables
pusillanimous