Where does “veszteséggel” come from?

veszteséggel (Hungarian) comes from Hungarian veszteség, from Hungarian -eség, from Hungarian -é-, from Hungarian -d, from Middle Welsh -nt — 3rd person plural verb ending.

Ancestry of “veszteséggel”, step by step

Step	Language	Word	Meaning
1	Hungarian	veszteség	loss; casualties
2	Hungarian	-eség	-dom, -ness, -ity. Added to an adjective, noun or...
3	Hungarian	-é-	—
4	Hungarian	-d	your; Used in the second-person singular definite...
5	Middle Welsh	-nt	3rd person plural verb ending

Every word from Middle Welsh -nt →Every word from Hungarian -d →Every word from Hungarian -é- →