Proto-Indo-European *sḗm

→ English semelfactive (mention)

→ Greek ένας (inherited)

→ Ancient Greek μία (mention)

→ Ancient Greek εἷς (inherited)

→ Latin semper (derived)

→ Old Persian 𐏃𐎣𐎼𐎶𐎨𐎡𐎹 (mention)

→ Sanskrit सकृत् (mention)

→ Sardinian semper (derived)

→ Old Irish in (inherited)

→ Old Irish sin (inherited)

→ Swedish som (derived)

→ Tocharian B ṣe (inherited)

→ Old Armenian մի (mention)

→ Tocharian A sas (inherited)