stupid

The story

1. Proto-Indo-European*(s)tew-
2. Proto-Indo-European*(s)tewp-
3. Proto-Indo-European*(s)tup-éh₁-ye-ti
4. Latinstup(eō)
5. Proto-Indo-European*dʰeh₁-
6. Latinstupidus
7. Middle Frenchstupide
8. English todaystupid

From Middle French stupide, from Latin stupidus (“struck senseless, amazed”), from stupeō (“be amazed or confounded, be struck senseless”), from Proto-Indo-European *(s)tup-, *(s)tewp- (“to push, stick”), from Proto-Indo-European *(s)tew- (“to push, hit”). Cognate with Old High German stubarōn (“to be astonished, be stunned, be blocked”). Related also to Old English stoppian (“to block, stop”). More at stop.

Words from the same roots