Russian пятница

← Bulgarian пе́тък (mention)

← Bulgarian пе́тка (mention)

← Old Church Slavonic пѧтъкъ (mention)

← Russian пять (suffix)

← Russian ница (suffix)

← Serbo-Croatian пе́так (mention)

← Ukrainian п'я́тниця (cognate)

→ Ingrian päädettsä (borrowed)