Where does “การรับรอง” come from?

การรับรอง (Thai) comes from Thai การ, from Pali kāra, from Sanskrit कार, from Sanskrit कृ, from Proto-Indo-European kʷer- — to do; to make; to build.

Ancestry of “การรับรอง”, step by step

การรับรอง traces back through two separate lines of ancestry.

via Thai การ

StepLanguageWordMeaning
1Thaiการwork; matter; task; affair; prefixed to nouns to...
2Palikāradeed; doing, manner; production, application
3Sanskritकारgain, prize, booty; contest, war; an act, action
4Sanskritकृto make
5Proto-Indo-Europeankʷer-to do; to make; to build

via Thai รับรอง

StepLanguageWordMeaning
1Thaiรับรองto affirm; to confirm; to guarantee; to...
2Thaiรับto greet; to receive; to welcome; to acquire; to...
3Proto-Southwestern Tairapᴰ²ˢto accept; to receive
Every word from Proto-Indo-European kʷer-Every word from Sanskrit कृEvery word from Sanskrit कार