Proto-Slavic *setь

→ Belarusian сем (mention)

→ Bulgarian седем (mention)

→ Czech sedm (mention)

→ Kashubian sétmë (mention)

→ Latvian septiņi (cognate)

→ Polish siedem (mention)

→ Rusyn сім (mention)

→ Serbo-Croatian sedam (mention)

→ Serbo-Croatian седам (mention)

→ Slovak sedem (mention)

→ Ukrainian сім (mention)

→ Old Polish siedm (mention)