Where does “Lichy” come from?

Lichy (Polish) comes from Old Polish lichy, from Proto-Slavic lixъ, from Proto-Indo-European leykʷ- — to leave.

Ancestry of “Lichy”, step by step

Step	Language	Word	Meaning
1	Old Polish	lichy	—
2	Proto-Slavic	lixъ	remaining, unnecessary, superfluous, bad
3	Proto-Indo-European	leykʷ-	to leave

Lichy — Etymology, Origin & Word History | Etymology Explorer