Where does “czwartkowy” come from?

czwartkowy (Polish) comes from Polish czwartek, from Old Polish czwartek, from Proto-Slavic četvьrtъkъ, from Proto-Slavic četvьrtъ, from Proto-Balto-Slavic ketwirtas, from Proto-Indo-European *kʷetwr̥tós — fourth.

czwartkowy (Polish): Thursday

Definitions

  1. Thursday

Ancestry of “czwartkowy”, step by step

StepLanguageWordMeaning
1PolishczwartekThursday
2Old PolishczwartekThursday
3Proto-SlavicčetvьrtъkъThursday
4Proto-Slavicčetvьrtъfourth
5Proto-Balto-Slavicketwirtasfourth
6Proto-Indo-European*kʷetwr̥tósfourth
Every word from Proto-Indo-European *kʷetwr̥tósEvery word from Proto-Balto-Slavic ketwirtasEvery word from Proto-Slavic četvьrtъ