Where does “син҄ь” come from?

син҄ь (Old Church Slavonic) comes from Proto-Slavic siňь — blue, bluish, glaucous; gray-blue, gray.

Ancestry of “син҄ь”, step by step

StepLanguageWordMeaning
1Proto-Slavicsiňьblue, bluish, glaucous; gray-blue, gray
Every word from Proto-Slavic siňь