Where does “шыпрак” come from?

шыпрак (Eastern Mari) comes from Eastern Mari рак.

Ancestry of “шыпрак”, step by step

шыпрак traces back through two separate lines of ancestry.

via Eastern Mari рак

StepLanguageWordMeaning
1Eastern Mariрак

via Eastern Mari шып

StepLanguageWordMeaning
1Eastern Mariшыпquiet, silent
Every word from Eastern Mari рак