Where does “letieť” come from?

letieť (Slovak) comes from Proto-Slavic letěti, from Proto-Indo-European lēk- — string, twig, tendril; leg, the main muscle of...

Ancestry of “letieť”, step by step

Step	Language	Word	Meaning
1	Proto-Slavic	letěti	to fly
2	Proto-Indo-European	lēk-	string, twig, tendril; leg, the main muscle of...