Where does “-речь” come from?

-речь (Russian) comes from Old East Slavic речи, from Proto-Slavic reťi — to say.

Ancestry of “-речь”, step by step

StepLanguageWordMeaning
1Old East Slavicречиto say
2Proto-Slavicreťito say

Words derived from “-речь”

Every word from Proto-Slavic reťi →Every word from Old East Slavic речи →