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:
Leviticus 19:15: "honor the person of the mighty:  but in righteousness shalt thou judge thy neighbor."
Leviticus 19:36: " Just balances, just weights, a just ephah, and a just hin,"
Leviticus 19:36: "Just balances,  just weights, a just ephah, and a just hin,"
Leviticus 19:36: "balances, just weights,  a just ephah, and a just hin, shall ye have:"
Leviticus 19:36: "weights, a just ephah,  and a just hin, shall ye have: I am the LORD"
Deuteronomy 1:16: "the causes between your brethren, and judge  righteously between every man and his brother, and the stranger"
Deuteronomy 16:18: "and they shall judge the people  with just judgment."
Deuteronomy 16:20: " That which is altogether just shalt thou follow, that thou mayest live, and inherit the land"
Deuteronomy 16:20: " That which is altogether just shalt thou follow, that thou mayest live, and inherit the land"
Deuteronomy 25:15: "But thou shalt have a perfect  and just weight, a perfect and just measure shalt thou have:"
Deuteronomy 25:15: "and just weight, a perfect  and just measure shalt thou have: that thy days"
Deuteronomy 33:19: "there they shall offer sacrifices  of righteousness: for they shall suck of the abundance of the seas,"
Job 6:29: "iniquity; yea, return again,  my righteousness"
Job 8:3: "or doth the Almighty pervert  justice?"
Job 8:6: "he would awake for thee, and make the habitation  of thy righteousness prosperous."
Job 29:14: "I put on  righteousness, and it clothed me: my judgment was as a robe and a diadem."
Job 31:6: "Let me be weighed  in an even balance, that God may know mine integrity."
Job 35:2: "thou this to be right, that thou saidst,  My righteousness is more than God's?"
Job 36:3: "my knowledge from afar, and will ascribe  righteousness to my Maker."
Psalms 4:1: "Hear me when I call, O God  of my righteousness: thou hast enlarged me when I was in distress; have mercy upon me, and hear"
Psalms 4:5: "Offer the sacrifices  of righteousness, and put your trust in the LORD."
Psalms 7:8: "the people: judge me, O LORD,  according to my righteousness, and according to mine integrity that is in"
Psalms 7:17: "I will praise the LORD  according to his righteousness: and will sing praise to the name of the LORD most high."
Psalms 9:4: "thou satest in the throne judging  right."
Psalms 9:8: "And he shall judge the world  in righteousness, he shall minister judgment to the people in uprightness."
Psalms 15:2: "He that walketh uprightly, and worketh  righteousness, and speaketh the truth in his heart."
Psalms 17:1: "A Prayer of David. Hear  the right, O LORD attend unto my cry, give ear"
Psalms 17:15: "As for me, I will behold thy face  in righteousness: I shall be satisfied, when I awake, with thy likeness."
Psalms 18:20: "The LORD rewarded  me according to my righteousness; according to the cleanness of my hands hath he recompensed"
Psalms 18:24: "Therefore hath the LORD recompensed  me according to my righteousness, according to the cleanness of my hands in his eyesight."
Psalms 23:3: "my soul: he leadeth me in the paths  of righteousness for his name's sake."
Psalms 35:24: "Judge me, O LORD my God,  according to thy righteousness; and let them not rejoice"
Psalms 35:27: "Let them shout for joy, and be glad, that favor  my righteous cause: yea, let them say continually, Let the LORD be magnified,"
Psalms 35:28: "And my tongue shall speak  of thy righteousness and of thy praise all the day"
Psalms 37:6: "And he shall bring forth  thy righteousness as the light, and thy judgment as the noonday."
Psalms 40:9: "I have preached  righteousness in the great congregation: lo, I have not refrained my lips,"
Psalms 45:4: "because of truth and meekness  and righteousness; and thy right hand shall teach thee terrible"
Psalms 45:7: "Thou lovest  righteousness, and hatest wickedness: therefore God, thy God,"
Psalms 48:10: "of the earth: thy right hand is full  of righteousness."
Psalms 50:6: "And the heavens shall declare  his righteousness: for God is judge himself. Selah."
Psalms 51:19: "Then shalt thou be pleased with the sacrifices  of righteousness, with burnt offering and whole burnt offering: then shall they offer"
Psalms 52:3: "more than good; and lying rather than to speak  righteousness. Selah."
Psalms 58:1: "of David. Do ye indeed speak  righteousness, O congregation? do ye judge uprightly, O ye sons"
Psalms 65:5: "By terrible things  in righteousness wilt thou answer us, O God of our salvation; who art the confidence of all the ends"
Psalms 72:2: "He shall judge thy people  with righteousness, and thy poor with judgment."
Psalms 85:10: "Mercy and truth are met together;  righteousness and peace have kissed"
Psalms 85:11: "Truth shall spring out of the earth;  and righteousness shall look down from heaven."
Psalms 85:13: " Righteousness shall go before him; and shall set us in the way of his steps."
Psalms 89:14: " Justice and judgment are the habitation of thy throne: mercy and truth shall go before thy face."
Psalms 94:15: "judgment shall return unto  righteousness: and all the upright in heart shall follow"