Where does “ক্ৰিয়া” come from?

ক্ৰিয়া (Assamese) comes from Sanskrit क्रिया, from Sanskrit आ, from Sanskrit धा, from Proto-Indo-European *dʰaH-.

ক্ৰিয়া (Assamese): verb

Definitions

Step	Language	Word	Meaning
1	Sanskrit	क्रिया	doing, performing, performance, occupation with ,...
2	Sanskrit	आ	separated form of आ-; With senses determined by...
3	Sanskrit	धा	—
4	Proto-Indo-European	*dʰaH-	—

ক্ৰিয়া — Etymology, Origin & Word History | Etymology Explorer