Where does “seukkailla” come from?

seukkailla (Finnish) comes from Finnish seukata, from Finnish seurustella, from Finnish -tellä, from Finnish -ttää, from Proto-Finnic -ttadak, from Proto-Uralic -kta-.

Ancestry of “seukkailla”, step by step

Step	Language	Word	Meaning
1	Finnish	seukata	to date, be dating
2	Finnish	seurustella	to date, go out with, go together; to converse,...
3	Finnish	-tellä	Front vowel variant of -tella
4	Finnish	-ttää	Front vowel variant of -ttaa
5	Proto-Finnic	-ttadak	Creates causative verbs from regular verbs,...
6	Proto-Uralic	-kta-	—

Every word from Proto-Uralic -kta- →Every word from Finnish -ttää →Every word from Proto-Finnic -ttadak →