Where does “অচেবা” come from?

অচেবা (Bengali) comes from Bengali অ-, from Sanskrit अ-, from Proto-Indo-Iranian a-, from Proto-Indo-European n̥-, from Proto-Indo-European ne — not.

অচেবা (Bengali): unknown

Definitions

Step	Language	Word	Meaning
1	Bengali	অ-	a-, an-, dis-, il-, im-, in-, ir-, -less, mal-,...
2	Sanskrit	अ-	un-, not; Used in the formation of imperfect,...
3	Proto-Indo-Iranian	a-	un-, a-
4	Proto-Indo-European	n̥-	not, un-
5	Proto-Indo-European	ne	not

অচেবা — Etymology, Origin & Word History | Etymology Explorer