Where does “legextenzívebb” come from?

legextenzívebb (Hungarian) comes from Hungarian extenzívebb, from Hungarian extenzív, from German extensiv, from French extensif, from Late Latin extensivus, from Latin extēnsus, from Latin extendō, from Latin tendō — to stretch, to extend.

Ancestry of “legextenzívebb”, step by step

Step	Language	Word	Meaning
1	Hungarian	extenzívebb	—
2	Hungarian	extenzív	extensive
3	German	extensiv	extensive
4	French	extensif	extensive
5	Late Latin	extensivus	extensive, extendible
6	Latin	extēnsus	—
7	Latin	extendō	to stretch or thrust out
8	Latin	tendō	to stretch, stretch out, distend, extend
9	Ancient Greek	τένων	tendon, sinew
10	Proto-Indo-European	ten-	to stretch, to extend

Every word from Proto-Indo-European ten- →Every word from Ancient Greek τένων →Every word from Latin tendō →