Where does “тежък” come from?

тежък (Bulgarian) comes from Old Church Slavonic тѧжькъ, from Proto-Slavic tęžьkъ, from Lithuanian tingus, from Proto-Indo-European tengʰ-, from Proto-Indo-European ten- — to stretch, to extend.

тежък (Bulgarian): heavy, weighty, ponderous, elephantine; hard,...

Definitions

heavy, weighty, ponderous, elephantine; hard,...

Ancestry of “тежък”, step by step

Step	Language	Word	Meaning
1	Old Church Slavonic	тѧжькъ	heavy; difficult
2	Proto-Slavic	tęžьkъ	heavy
3	Lithuanian	tingus	lazy
4	Proto-Indo-European	tengʰ-	to pull; to be heavy, difficult
5	Proto-Indo-European	ten-	to stretch, to extend

Words derived from “тежък”

тежко

Every word from Proto-Indo-European ten- →Every word from Proto-Indo-European tengʰ- →Every word from Lithuanian tingus →