Where does “thirttene” come from?

thirttene (Middle English) comes from Old English þrēotīene, from Proto-Germanic þritehun, from Proto-Germanic tehun, from Proto-Indo-European déḱm̥t — ten.

Ancestry of “thirttene”, step by step

StepLanguageWordMeaning
1Old Englishþrēotīenethirteen
2Proto-Germanicþritehunthirteen
3Proto-Germanictehunten
4Proto-Indo-Europeandéḱm̥tten

Words derived from “thirttene”

Every word from Proto-Indo-European déḱm̥t →Every word from Proto-Germanic tehun →Every word from Proto-Germanic þritehun →