Where does “tredoble” come from?

tredoble (Norwegian Bokmål) comes from Norwegian Bokmål tre, from Old Norse tré, from Proto-Germanic trewą, from English doru, from Ancient Greek δόρυ, from Proto-Hellenic dóru, from Proto-Indo-European dóru, from Proto-Indo-European drew- — hard, firm, strong, solid; hard, fast; tree.

tredoble (Norwegian Bokmål): to triple or treble

Definitions

  1. to triple or treble

Ancestry of “tredoble”, step by step

tredoble traces back through two separate lines of ancestry.

via Norwegian Bokmål tre

StepLanguageWordMeaning
1Norwegian Bokmåltrethree; tree; wood
2Old Norsetrétree; the mast of a ship; ree, rafter, beam
3Proto-Germanictrewątree
4EnglishdoruAlternative form of dory
5Ancient Greekδόρυwood, tree, stem; spear shaft, spear, lance,...
6Proto-Hellenicdórutree
7Proto-Indo-Europeandórutree
8Proto-Indo-Europeandrew-hard, firm, strong, solid; hard, fast; tree

via Norwegian Bokmål doble

StepLanguageWordMeaning
1Norwegian Bokmåldobledefinite singular of dobbel; plural of dobbel; to...
2Norwegian Bokmåldobbeldouble
Every word from Proto-Indo-European drew-Every word from Proto-Indo-European dóruEvery word from Proto-Hellenic dóru