Morally upright; without guilt or sin: a righteous parishioner.
In accordance with virtue or morality: a righteous judgment.
Morally justifiable: righteous anger. See Synonyms at moral.
n. Righteous people considered as a group.
[Middle English ryghtuous, alteration of rihtwise, from Old English rihtwīs : riht, right; see right + -wīse, -wise.] right'eous·ly adv., right'eous·ness n.