Where does “thūmo” come from?

thūmo (Old Dutch) comes from Proto-West Germanic þūmō, from Proto-Germanic þūmô, from Proto-Indo-European tūm-, from Proto-Indo-European tewh₂- — to swell; to crowd; to be strong.

Ancestry of “thūmo”, step by step

StepLanguageWordMeaning
1Proto-West Germanicþūmōthumb
2Proto-Germanicþūmôthumb
3Proto-Indo-Europeantūm-to grow; to swell, to increase; to swell, be...
4Proto-Indo-Europeantewh₂-to swell; to crowd; to be strong

Words derived from “thūmo

Every word from Proto-Indo-European tewh₂-Every word from Proto-Indo-European tūm-Every word from Proto-Germanic þūmô