Proto-Slavic *sъpati

→ Belarusian спаць (inherited)

→ Bulgarian спя (inherited)

→ Czech spát (inherited)

→ Czech usnout (mention)

→ Old Church Slavonic съпати (inherited)

→ Lower Sorbian spaś (inherited)

→ Lower Sorbian spański (derived)

→ Macedonian спие (derived)

→ Polish spać (inherited)

→ Russian спать (cognate)

→ Russian уснуть (mention)

→ Russian -сыпать (mention)

→ Russian усыпить (derived)

→ Serbo-Croatian spati (inherited)

→ Serbo-Croatian спати (inherited)

→ Slovak spať (inherited)

→ Slovene spati (inherited)

→ Ukrainian спати (inherited)

→ Old Czech spáti (inherited)