Strong's #6664: tsedeq (pronounced tseh'-dek)
 from 6663; the right (natural, moral or legal); also (abstractly) equity or (figuratively) prosperity:--X even, (X that which is altogether) just(-ice), ((un-))right(-eous) (cause, -ly, - ness).
Brown-Driver-Briggs Hebrew Lexicon:
 
  tsedeq 
 
 1) justice, rightness, righteousness
 
 1a) what is right or just or normal, rightness, justness (of weights and measures)
 1b) righteousness (in government)
 
 1b1) of judges, rulers, kings
 1b2) of law
 1b3) of Davidic king, Messiah
 1b4) of Jerusalem as seat of just government
 1b5) of God' s attribute
 
 1c) righteousness, justice (in case or cause)
 1d) rightness (in speech)
 1e) righteousness (as ethically right)
 1f) righteousness (as vindicated), justification (in controversy), deliverance, victory, prosperity
 
 1f1) of God as covenant-keeping in redemption
 1f2) in name of Messianic king
 1f3) of people enjoying salvation
 1f4) of Cyrus
 
  Part of Speech: noun masculine
Relation: from H6663
Usage:
This word is used 118 times:
Psalms 96:13: "the earth: he shall judge the world  with righteousness, and the people with his truth."
Psalms 97:2: "Clouds and darkness are round about  him: righteousness and judgment are the habitation of his throne."
Psalms 97:6: "The heavens declare  his righteousness, and all the people see his glory."
Psalms 98:9: "he cometh to judge the earth:  with righteousness shall he judge the world, and the people with equity."
Psalms 118:19: "Open to me the gates  of righteousness: I will go into them, and I will praise the LORD:"
Psalms 119:7: "thee with uprightness of heart, when I shall have learned  thy righteous judgments."
Psalms 119:62: "At midnight I will rise to give thanks unto thee because of  thy righteous judgments."
Psalms 119:75: "O LORD, that thy judgments  are right, and that thou in faithfulness hast afflicted"
Psalms 119:106: "I have sworn, and I will perform it, that I will keep  thy righteous judgments."
Psalms 119:121: "I have done judgment  and justice: leave me not to mine oppressors."
Psalms 119:123: "fail for thy salvation, and for the word  of thy righteousness."
Psalms 119:138: "Thy testimonies that thou hast commanded  are righteous and very faithful."
Psalms 119:142: "Thy righteousness is an everlasting  righteousness, and thy law is the truth."
Psalms 119:144: " The righteousness of thy testimonies is everlasting: give me understanding, and I shall live."
Psalms 119:160: "is true from the beginning: and every one  of thy righteous judgments endureth forever."
Psalms 119:164: "times a day do I praise thee because of  thy righteous judgments."
Psalms 119:172: "for all thy commandments  are righteousness."
Psalms 132:9: "Let thy priests be clothed  with righteousness; and let thy saints shout for joy."
Proverbs 1:3: "To receive the instruction of wisdom,  justice, and judgment, and equity;"
Proverbs 2:9: "Then shalt thou understand  righteousness, and judgment, and equity; yea, every good path."
Proverbs 8:8: "All the words of my mouth  are in righteousness; there is nothing froward or perverse"
Proverbs 8:15: "reign, and princes decree  justice."
Proverbs 12:17: "He that speaketh truth showeth forth  righteousness: but a false witness deceit."
Proverbs 16:13: " Righteous lips are the delight of kings; and they love him that speaketh right."
Proverbs 25:5: "the king, and his throne shall be established  in righteousness."
Proverbs 31:9: "Open thy mouth, judge  righteously, and plead the cause of the poor and needy."
Ecclesiastes 3:16: "that wickedness was there; and the place  of righteousness, that iniquity was there."
Ecclesiastes 5:8: "of the poor, and violent perverting of judgment  and justice in a province, marvel not at"
Ecclesiastes 7:15: "there is a just man that perisheth  in his righteousness, and there is a wicked man that prolongeth his life in his wickedness."
Isaiah 1:21: "a harlot! it was full of judgment;  righteousness lodged in it; but now murderers."
Isaiah 1:26: "afterward thou shalt be called, The city  of righteousness, the faithful city."
Isaiah 11:4: " But with righteousness shall he judge the poor, and reprove with equity for the meek of the earth: and he shall smite"
Isaiah 11:5: " And righteousness shall be the girdle of his loins, and faithfulness the girdle of his reins."
Isaiah 16:5: "and seeking judgment, and hasting  righteousness."
Isaiah 26:9: "the inhabitants of the world will learn  righteousness."
Isaiah 26:10: "to the wicked, yet will he not learn  righteousness: in the land of uprightness will he deal unjustly, and will not"
Isaiah 32:1: "Behold, a king shall reign  in righteousness, and princes shall rule in judgment."
Isaiah 41:2: "Who raised up  the righteous man from the east, called him to his foot, gave"
Isaiah 41:10: "thee; yea, I will uphold thee with the right hand  of my righteousness."
Isaiah 42:6: "I the LORD have called  thee in righteousness, and will hold thine hand, and will keep thee, and give"
Isaiah 42:21: "The LORD is well pleased  for his righteousness' sake; he will magnify the law, and make it honorable."
Isaiah 45:8: "from above, and let the skies pour down  righteousness: let the earth open, and let them bring forth"
Isaiah 45:13: "I have raised him up  in righteousness, and I will direct all his ways: he shall build"
Isaiah 45:19: "I the LORD speak  righteousness, I declare things that are right."
Isaiah 51:1: "Hearken to me, ye that follow after  righteousness, ye that seek the LORD: look unto"
Isaiah 51:5: " My righteousness is near; my salvation is gone forth, and mine arms shall judge the people; the isles"
Isaiah 51:7: "Hearken unto me, ye that know  righteousness, the people in whose heart is my law; fear"
Isaiah 58:2: "the ordinance of their God: they ask of me the ordinances  of justice; they take delight in approaching to God."
Isaiah 58:8: "and thine health shall spring forth speedily:  and thy righteousness shall go before thee; the glory of the LORD"
Isaiah 59:4: "None calleth  for justice, nor any pleadeth for truth: they trust in"