Proto-Indo-European *(s)treg-

→ English stretch (derived)

→ Irish treoir (derived)

→ Scottish Gaelic treun (derived)

→ Scottish Gaelic treòir (derived)

→ Russian страшный (derived)

→ Old Irish trén (derived)

→ Old Irish trec'h (derived(sga/br))

→ Albanian shtriqem (derived)