Where does “tjugotredje” come from?

tjugotredje (Swedish) comes from Swedish tredje, from Old Swedish þriþi, from Old Norse þriði, from Proto-Germanic þridjô, from Proto-Indo-European tretyós, from Proto-Indo-European tr̥tyós, from Proto-Indo-European tréyes — three.

tjugotredje (Swedish): twenty-third

Definitions

twenty-third

Ancestry of “tjugotredje”, step by step

tjugotredje traces back through two separate lines of ancestry.

via Swedish tredje

Step	Language	Word	Meaning
1	Swedish	tredje	third
2	Old Swedish	þriþi	third
3	Old Norse	þriði	third
4	Proto-Germanic	þridjô	third
5	Proto-Indo-European	tretyós	—
6	Proto-Indo-European	tr̥tyós	third
7	Proto-Indo-European	tréyes	three

via Swedish tjugo

Step	Language	Word	Meaning
1	Swedish	tjugo	twenty
2	Old Swedish	tiughu	twenty
3	Old Norse	tuttugu	twenty
4	Proto-Germanic	twai tigiwiz	twenty
5	Proto-Germanic	twai	two
6	Proto-Indo-European	dwóh₁	two

Every word from Proto-Indo-European tréyes →Every word from Proto-Indo-European tr̥tyós →Every word from Proto-Indo-European tretyós →