What is God of justice in Hebrew?

The Hebrew Word for just depends on context:

Just (adverb)

• רַק only, just, merely, but
  
• בִּלבַד = only, just, solely, merely, very
  
• אַך = but, indeed, however, only, just
  
• דַוקָא = precisely, just, especially, exactly so, only so, just for spite
  

Just (adjective)

• צוֹדֵק = right, just, equitable
  
• צַדִיק = righteous, right, just, pious, upright, innocent
  
• מוּצדָק = vindicated, justified, justifiable, just
  
• יָשָׁר = straight, right, honest, straightforward, direct, just
  
• ×ָכוֹן = right, correct, true, proper, exact, just