Where does “döntöttünk” come from?

döntöttünk (Hungarian) comes from Hungarian -öttünk, from Hungarian -ött, from Hungarian -ö-, from Hungarian -d, from Middle Welsh -nt — 3rd person plural verb ending.

Ancestry of “döntöttünk”, step by step

Step	Language	Word	Meaning
1	Hungarian	-öttünk	Forms the first-person plural past tense of verbs (indicative mood, indefinite conjugation)
2	Hungarian	-ött	-ed, -t; in
3	Hungarian	-ö-	linking vowel
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 -ött →