Where does “дѧковати” come from?

дѧковати (Old East Slavic) comes from Polish dziękować, from Old High German dankōn, from Proto-West Germanic *þankōn, from Proto-Germanic þankōną, from Proto-Germanic þankaz, from Proto-Indo-European teng- — to think.

Ancestry of “дѧковати”, step by step

StepLanguageWordMeaning
1Polishdziękowaćto thank
2Old High Germandankōnto thank
3Proto-West Germanic*þankōnto thank
4Proto-Germanicþankōnąto thank
5Proto-Germanicþankazthought; mind; consideration; remembrance;...
6Proto-Indo-Europeanteng-to think
Every word from Proto-Indo-European teng- →Every word from Proto-Germanic þankaz →Every word from Proto-Germanic þankōną →