että

From Proto-Finnic *että, from Proto-Uralic *e- (“this”) plus a suffix. (Compare jotta from the same root as joka.) The word is cognate to Estonian et, and the stem has a cognate in Hungarian ez.

että

1. (subordinating) that (conjunction indicating that the subordinate clause of the subject of the verb of the main clause)

   Tiedän, että osaan tehdä sen.

   I know (that) I can do it.

2. (subordinating) Indicates purpose in order to, to, so that
3. as to

   Tiedän, että hän kärsi masennuksesta, mutta varmastikaan hän ei menisi niin pitkälle, että tappaisi itsensä.

   I know he suffered from depression, but surely he wouldn't go so far as to kill himself?

• (in order to): jotta

• ettei

From Old Norse ættaðr, equivalent to ett +‎ -ä.

että

1. born, descended from

   Hwana gjär han ättä?

   Wherefrom is he born?