Where does “őszintébben” come from?

őszintébben (Hungarian) comes from Hungarian őszinte, from Hungarian ön, from Hungarian ön-, from Turkish ön, from Ottoman Turkish اوك, from Proto-Turkic ǖn — sound, voice.

Ancestry of “őszintébben”, step by step

Step	Language	Word	Meaning
1	Hungarian	őszinte	honest, frank, sincere
2	Hungarian	ön	you
3	Hungarian	ön-	self-
4	Turkish	ön	front
5	Ottoman Turkish	اوك	voice (of human or animal); sound
6	Proto-Turkic	ǖn	sound, voice

Every word from Proto-Turkic ǖn →Every word from Hungarian ön- →Every word from Hungarian ön →