Where does “nuorruttaminen” come from?

nuorruttaminen (Finnish) comes from Finnish nuorruttaa, from Finnish nuortua, from Finnish -tua, from Ido tu, from English thou, from English thousand, from Middle English thousend, from Old English þūsend — to swell; to crowd; to be strong.

Ancestry of “nuorruttaminen”, step by step

StepLanguageWordMeaning
1FinnishnuorruttaaTo rejuvenate
2FinnishnuortuaTo grow/become younger, be rejuvenated
3Finnish-tuaForms inchoative or passive intransitive verbs...
4Idotuyou singular, thou
5EnglishthouNominative singular of ye; To address using the...
6EnglishthousandA numerical value equal to 1,000 = 10 × 100 = 10
7Middle EnglishthousendA thousand; 1000
8Old Englishþūsendthousand
9Proto-West Germanicþūsundithousand
10Proto-Germanicþūsundīa thousand
11Proto-Indo-EuropeantuHsont-thousand
12Proto-Indo-Europeantewh₂-to swell; to crowd; to be strong
Every word from Proto-Indo-European tewh₂- →Every word from Finnish -tua →Every word from Proto-Indo-European tuHsont- →