Proto-Indo-European *supnós

→ English somnolent (mention)

→ English sweven (mention)

→ Assamese সপোন (mention)

→ Assamese সপান (mention)

→ Belarusian сон (derived)

→ Bulgarian сън (derived)

→ Old Church Slavonic сънъ (derived)

→ Ancient Greek ὕπνος (inherited)

→ Upper Sorbian són (derived)

→ Maithili सपना (mention)

→ Maithili 𑒮𑒣𑒢𑒰 (mention)

→ Macedonian сон (derived)

→ Nepali सपना (mention)

→ Russian сон (derived)

→ Serbo-Croatian san (derived)

→ Serbo-Croatian сан (derived)

→ Albanian gjumë (derived)

→ Ukrainian сон (derived)