Bulgarian късно

← Bulgarian късно (mention)

← Bulgarian късен (mention)

← Bulgarian къ (mention)

← Bulgarian сън (mention)

← Old Church Slavonic късьно (inherited)

← Old Church Slavonic късьнъ (mention)

← Old Church Slavonic оукъснѣти (mention)

← Old Church Slavonic закъснѣние (mention)

← Lithuanian kušlas (cognate)

← Latvian kusu (cognate)

← Russian косный (cognate)

← Serbo-Croatian kasno (cognate)

→ Bulgarian късно (mention)

→ Serbo-Croatian kasno (cognate)