Where does “ꠢꠣꠙ” come from?

ꠢꠣꠙ (Sylheti) comes from Sanskrit सर्प, from Sanskrit सृप्, from Proto-Indo-European serp- — to creep, crawl.

ꠢꠣꠙ (Sylheti): snake

Definitions

Step	Language	Word	Meaning
1	Sanskrit	सर्प	creeping, crawling, stealing along; a snake,...
2	Sanskrit	सृप्	—
3	Proto-Indo-European	serp-	to creep, crawl

ꠢꠣꠙ — Etymology, Origin & Word History | Etymology Explorer