Where does “jistě” come from?

jistě (Czech) comes from Czech -ě, from Proto-Slavic -ę, from Proto-Indo-European -ę.

jistě (Czech): certainly, surely; masculine singular present...

Definitions

  1. certainly, surely; masculine singular present...

Ancestry of “jistě”, step by step

StepLanguageWordMeaning
1Czech-ěUsed to form adverbs from adjectives
2Proto-Slavic-ęForms nouns for young animals and other...
3Proto-Indo-European-ę—
Every word from Proto-Indo-European -ę →Every word from Czech -ě →Every word from Proto-Slavic -ę →