Where does “stałość” come from?

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

stałość (Polish): stability, constancy, consistency, permanence

Definitions

stability, constancy, consistency, permanence

Ancestry of “stałość”, step by step

Step	Language	Word	Meaning
1	Polish	stały	fixed
2	Old Polish	stały	contant, persistent; single-minded
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 Old Polish -ły →Every word from Old Polish stały →