Where does “การใช้” come from?

การใช้ (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 “การใช้”, step by step

การใช้ 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 ใช้

StepLanguageWordMeaning
1Thaiใช้to apply; to disburse; to pay ; to perform
2Proto-Tai*ʑaɰꟲ—
Every word from Proto-Indo-European kʷer- →Every word from Sanskrit कृ →Every word from Sanskrit कार →