Where does “ความยุติธรรม” come from?

ความยุติธรรม (Thai) comes from Thai ยุติธรรม, from Thai ธรรม, from Sanskrit धर्म, from Proto-Indo-Iranian dʰármas, from Proto-Indo-European dʰer- — to support; to hold.

Ancestry of “ความยุติธรรม”, step by step

ความยุติธรรม traces back through two separate lines of ancestry.

via Thai ยุติธรรม

StepLanguageWordMeaning
1Thaiยุติธรรมfairness; justness; justice; rightness; righteousness; reasonableness; reasonability
2Thaiธรรมdharma; doctrine
3Sanskritधर्मmorality, virtue, moral code, good deed, good...
4Proto-Indo-Iraniandʰármas—
5Proto-Indo-Europeandʰer-to support; to hold

via Thai ความ

StepLanguageWordMeaning
1Thaiความaffair; matter; content; essence; subject;...
2Proto-Taiɣwaːmᴬmatter
Every word from Proto-Indo-European dʰer- →Every word from Proto-Indo-Iranian dʰármas →Every word from Sanskrit धर्म →