Wordnet 3.0
ADJECTIVE (2)
1.
characterized by or proceeding from accepted standards of morality or justice;
- Example: "the...prayer of a righteous man availeth much"- James 5:162.
morally justified;
- Example: "righteous indignation"
The Collaborative International Dictionary of English v.0.48:
Righteous \Right"eous\, a. [OE. rightways, rightwise, AS.
rightw[imac]s; riht right + w[imac]s wise, having wisdom,
prudent. See Right, a., Wise, a.]
Doing, or according with, that which is right; yielding to
all their due; just; equitable; especially, free from wrong,
guilt, or sin; holy; as, a righteous man or act; a righteous
retribution.
[1913 Webster]
Fearless in his righteous cause. --Milton.
[1913 Webster]
Syn: Upright; just; godly; holy; uncorrupt; virtuous; honest;
equitable; rightful.
[1913 Webster]
WordNet (r) 3.0 (2006):
righteous
adj 1: characterized by or proceeding from accepted standards of
morality or justice; "the...prayer of a righteous man
availeth much"- James 5:16 [ant: unrighteous]
2: morally justified; "righteous indignation"