Where does “لص” come from?

لص (Arabic) comes from Ancient Greek λῃστής, from Ancient Greek -τής, from Ancient Greek πεῖρα, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

لص (Arabic): thief, robber; thief; verbal noun of لَصَّ

Definitions

thief, robber; thief; verbal noun of لَصَّ

Ancestry of “لص”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	λῃστής	robber, bandit; pirate, buccaneer; revolutionary,...
2	Ancient Greek	-τής	Appended to verbs to form agent nouns
3	Ancient Greek	πεῖρα	trial, experiment, attempt
4	Proto-Indo-European	per-	before, in front; first; to go through
5	Proto-Indo-European	pr̥tós	passed , crossed

Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Ancient Greek -τής →