Where does “[[ptáti]], [[pýtati]]” come from?

[[ptáti]], [[pýtati]] (Old Czech) comes from Proto-Slavic pȳtàti — to ask, examine.

Ancestry of “[[ptáti]], [[pýtati]]”, step by step

Step	Language	Word	Meaning
1	Proto-Slavic	pȳtàti	to ask, examine

[[ptáti]], [[pýtati]] — Etymology, Origin & Word History | Etymology Explorer