Learn Finnish: Ilahduin uusista yksityisyyden asetuksista. - I was delighted with the new privacy settings.

The verb ilahtua (to be delighted or glad) requires the thing causing the joy to be in the elative case (-sta or -stä). While in English you say 'delighted with' or 'glad about', Finnish treats the emotion as arising 'out of' the source.

How is the word yksityisyyden formed?

It is the genitive form of yksityisyys (privacy). This noun is derived from the adjective yksityinen (private) by replacing the -nen ending with the noun-forming suffix -syys. The genitive ending -n then links it to asetuksista to essentially mean 'settings of privacy'.

Why does the word for 'setting' (asetus) become asetuksista here?

Words ending in -us, like asetus, change the -s to -kse- before adding case endings. To make it plural, the plural marker -i- is added, which turns -kse- into -ksi-. Finally, adding the elative ending -sta gives us asetuksista.

What kind of verb is ilahtua?

It is a change-of-state verb meaning 'to become glad' or 'to be delighted', derived from the noun ilo (joy). Unlike the transitive verb ilahduttaa (to make someone else glad), ilahtua focuses on the subject's own internal change of feeling.