Where does “zmarła” come from?

zmarła (Polish) comes from Polish zmarły, from Polish -ły, from Old Polish -ły, from Proto-Slavic -lъ — From verbs, forms participles; From intransitive...

Ancestry of “zmarła”, step by step

Step	Language	Word	Meaning
1	Polish	zmarły	deceased, departed, decedent; deceased;...
2	Polish	-ły	forms adjectives from intransitive verbs
3	Old Polish	-ły	forms adjectives from intransitive verbs
4	Proto-Slavic	-lъ	From verbs, forms participles; From intransitive...

Every word from Proto-Slavic -lъ →Every word from Polish -ły →Every word from Old Polish -ły →