The definition of cowardice is lacking in courage.
A cowardly action.
A tendency to be cowardly, craven, etc.
A reason for dread or apprehension:
Find another word for dastardliness. In this page you can discover 12 synonyms, antonyms, idiomatic expressions, and related words for dastardliness, like: chickenheartedness, cowardice, cowardliness, cravenness, faint-heartedness, funk, pusillanimity, unmanliness, gutlessness, yellowness and yellow streak.