Where does “-ост” come from?

-ост (Bulgarian) comes from Old Church Slavonic -ость, from Proto-Slavic -ostь — Used with adjectival stems to form abstract...

Ancestry of “-ост”, step by step

StepLanguageWordMeaning
1Old Church Slavonic-ость-ness, -ity; deadjectival nominalizing suffix...
2Proto-Slavic-ostьUsed with adjectival stems to form abstract...

Words derived from “-ост”

Every word from Proto-Slavic -ostь →Every word from Old Church Slavonic -ость →