Where does “niemowlak” come from?

niemowlak (Polish) comes from Polish niemowlę, from Polish nie, from Old Polish nie, from Proto-Slavic ne, from Proto-Balto-Slavic nē, from Proto-Indo-European né — not; no.

niemowlak (Polish): nursling, suckling

Definitions

nursling, suckling

Ancestry of “niemowlak”, step by step

Step	Language	Word	Meaning
1	Polish	niemowlę	infant, baby
2	Polish	nie	no; not; don't, didn't "etc."; accusative...
3	Old Polish	nie	negation particle; no, not
4	Proto-Slavic	ne	not
5	Proto-Balto-Slavic	nē	not
6	Proto-Indo-European	né	not; no

Every word from Proto-Indo-European né →Every word from Proto-Balto-Slavic nē →Every word from Proto-Slavic ne →