Where does “katkottaa” come from?

katkottaa (Finnish) comes from Finnish -ttää, from Proto-Finnic -ttadak, from Proto-Uralic -kta-.

Ancestry of “katkottaa”, step by step

StepLanguageWordMeaning
1Finnish-ttääFront vowel variant of -ttaa
2Proto-Finnic-ttadakCreates causative verbs from regular verbs,...
3Proto-Uralic-kta-—
Every word from Proto-Uralic -kta- →Every word from Finnish -ttää →Every word from Proto-Finnic -ttadak →