Antonyms of adj unrighteous

1 sense of unrighteous

Sense 1
unrighteous (vs. righteous) -- (not righteous; "an unrighteous man"; "an unrighteous law")

righteous (vs. unrighteous) -- (characterized by or proceeding from accepted standards of morality or justice; "the...prayer of a righteous man availeth much"- James 5:16)
        => good, just, upright -- (of moral excellence; "a genuinely good person"; "a just cause"; "an upright and respectable man")
        => sound -- (free from moral defect; "a man of sound character")

Similarity of adj unrighteous

1 sense of unrighteous

Sense 1
unrighteous (vs. righteous) -- (not righteous; "an unrighteous man"; "an unrighteous law")
       => sinful, unholy, wicked -- (having committed unrighteous acts; "a sinful person")
          Also See-> evil#1; guilty#1; immoral#1; unjust#2; unworthy#1; wicked#1