Where does “maścisty” come from?

maścisty (Polish) comes from Polish maść, from Proto-Slavic mastь, from Proto-Slavic -tь, from Proto-Indo-European -tis — Derives abstract/action nouns from verb roots.

Ancestry of “maścisty”, step by step

StepLanguageWordMeaning
1Polishmaśćointment; An animal's coat colour
2Proto-Slavicmastьointment
3Proto-Slavic-tьDeverbative, creates nouns denoting act, state,...
4Proto-Indo-European-tisDerives abstract/action nouns from verb roots
Every word from Proto-Indo-European -tis →Every word from Proto-Slavic -tь →Every word from Proto-Slavic mastь →