Where does “megvásárolt” come from?

megvásárolt (Hungarian) comes from Hungarian megvásárol, from Hungarian vásárol, from Hungarian -öl, from Hungarian -ö-, from Hungarian -d, from Middle Welsh -nt — 3rd person plural verb ending.

Ancestry of “megvásárolt”, step by step

Step	Language	Word	Meaning
1	Hungarian	megvásárol	to buy, to purchase
2	Hungarian	vásárol	to buy
3	Hungarian	-öl	Used to form the second-person singular present...
4	Hungarian	-ö-	linking vowel
5	Hungarian	-d	your; Used in the second-person singular definite...
6	Middle Welsh	-nt	3rd person plural verb ending

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