Where does “неправдоподобно” come from?
неправдоподобно (Russian) comes from Russian неправдоподо́бный, from Russian правдоподо́бный, from Russian правдоподо́бие, from Russian пра́вда, from Old East Slavic правьда, from Proto-Slavic pravьda, from Proto-Slavic pravъ, from Proto-Balto-Slavic prōˀwas — passed , crossed.
неправдоподобно (Russian): improbably
Ancestry of “неправдоподобно”, step by step