Where does “-tba” come from?

-tba (Old Czech) comes from Proto-Slavic -tva, from Proto-Indo-European -tweh₂, from Proto-Indo-European -eh₂.

Ancestry of “-tba”, step by step

StepLanguageWordMeaning
1Proto-Slavic-tvaDeverbative, forming nouns denoting an act,...
2Proto-Indo-European-tweh₂Forms nouns from verbs
3Proto-Indo-European-eh₂—

Words derived from “-tba”

Every word from Proto-Indo-European -eh₂ →Every word from Proto-Slavic -tva →Every word from Proto-Indo-European -tweh₂ →