Lithuanian kirmis

← Proto-Balto-Slavic *kírmis (inherited)

← Proto-Indo-European *kʷŕ̥mis (inherited)

← Latvian cirmenis (cognate)

← Proto-Slavic *čьrvь (cognate)

→ Finnish käärme (cognate)

→ Latvian cirmenis (cognate)

→ Latvian kurmis (cognate)

→ Old Prussian girmis (cognate)