Where does “การวิจัย” come from?

การวิจัย (Thai) comes from Thai วิจัย, from Pali vicaya, from Sanskrit विचय, from Sanskrit चय, from Sanskrit चि, from Proto-Indo-European kʷey- — to pay; to avenge.

Ancestry of “การวิจัย”, step by step

การวิจัย traces back through two separate lines of ancestry.

via Thai วิจัย

StepLanguageWordMeaning
1Thaiวิจัยcollection; compilation; assemblage; accumulation; gathering
2Palivicayasearch, investigation, examination
3Sanskritविचयgathering or putting together, arrangement, enumeration
4Sanskritचयcollecting
5Sanskritचिto observe, perceive
6Proto-Indo-Europeankʷey-to pay; to avenge

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
Every word from Proto-Indo-European kʷey-Every word from Sanskrit चिEvery word from Sanskrit चय