Proto-Slavic *(j)esenь

→ Belarusian восень (inherited)

→ Bulgarian есен (inherited)

→ Kashubian jeséń (inherited)

→ Old Church Slavonic ѥсень (inherited)

→ Gothic 𐌰𐍃𐌰𐌽𐍃 (cognate)

→ Macedonian есен (inherited)

→ Polish jesień (inherited)

→ Old Prussian assanis (cognate)

→ Russian осень (inherited)

→ Serbo-Croatian јесен (inherited)

→ Serbo-Croatian jesen (inherited)

→ Slovak jeseň (inherited)

→ Slovene jesen (inherited)

→ Ukrainian осінь (inherited)

→ Old Armenian աշուն (cognate)