Words that come from Proto-Indo-European treg-

145 words across 30 languages descend from Proto-Indo-European treg- — including straight, stretch, straightforward, stretching, straighten, straightway, stretcher, straightforwardly.

See the etymology of treg- itself →

English (52)

Swedish (11)

Norwegian Bokmål (9)

German (8)

Dutch (7)

Icelandic (6)

Middle English (6)

Norwegian Nynorsk (5)

Proto-Germanic (5)

Japanese (4)

Luxembourgish (3)

Old English (3)

Proto-West Germanic (3)

Middle Dutch (2)

Russian (2)

Old Norse (2)

Old Dutch (2)

Old High German (2)

Middle High German (2)

Albanian (1)

Italian (1)

Esperanto (1)

Korean (1)

Polish (1)

Tok Pisin (1)

Old Saxon (1)

Serbo-Croatian (1)

Danish (1)

Middle Low German (1)

Old Danish (1)