Despicably cowardly:
— The unprovoked and dastardly attack by Japan on...December 7th.

synonym: dastard.

Roget 862: coward, cowardly; fearful, shy; timid, timorous; skittish; poor-spirited, spiritless, soft, effeminate.    weak-minded; infirm of purpose etc. 605; weak-hearted, fainthearted, chickenhearted, henhearted^†, lilyhearted, pigeon-hearted; white-livered^†, lily-livered, milk-livered^†; milksop, smock-faced; unable to say 'boo' to a goose.    dastard, dastardly; base, craven, sneaking, dunghill, recreant; unwarlike, unsoldier-like.    in face a lion but in heart a deer.   " unmanned; frightened etc. 860.    ... show more