Where does “kajastella” come from?

kajastella (Finnish) comes from Finnish kajastaa, from Finnish -stää — Front vowel variant of -staa.

Ancestry of “kajastella”, step by step

Step	Language	Word	Meaning
1	Finnish	kajastaa	to dawn; to be barely visible, seem to be, be in...
2	Finnish	-stää	Front vowel variant of -staa