Where does “вимираючий” come from?

вимираючий (Ukrainian) comes from Ukrainian -ю́чий, from Proto-Slavic -otь, from Proto-Slavic -otъ, from Proto-Slavic -tъ — Deverbal from mono-syllabic simple stems, forms...

Ancestry of “вимираючий”, step by step

StepLanguageWordMeaning
1Ukrainian-ю́чий—
2Proto-Slavic-otьFrom basic roots, forms derivative nouns
3Proto-Slavic-otъFrom adjectives/adverbs, forms action nouns; From...
4Proto-Slavic-tъDeverbal from mono-syllabic simple stems, forms...
Every word from Proto-Slavic -tъ →Every word from Ukrainian -ю́чий →Every word from Proto-Slavic -otь →