Where does “þumalputtaregla” come from?
þumalputtaregla (Icelandic) comes from Icelandic þumalputti, from Icelandic þumall, from Old Norse þumall, from Proto-Germanic þūmilaz, from Proto-Germanic þūmô, from Proto-Indo-European tūm-, from Proto-Indo-European tewh₂- — to swell; to crowd; to be strong.
þumalputtaregla (Icelandic): rule of thumb
Ancestry of “þumalputtaregla”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Icelandic | þumalputti | thumb |
| 2 | Icelandic | þumall | thumb |
| 3 | Old Norse | þumall | thumb |
| 4 | Proto-Germanic | þūmilaz | thumb-covering; thumb-sheath |
| 5 | Proto-Germanic | þūmô | thumb |
| 6 | Proto-Indo-European | tūm- | to grow; to swell, to increase; to swell, be... |
| 7 | Proto-Indo-European | tewh₂- | to swell; to crowd; to be strong |