Learn Finnish: Loppupomo katosi odottamattomaksi ajaksi. - The final boss disappeared for an unexpected amount of time.

Adding the negative participle suffix to odottaa (to wait / to expect) gives us odottamaton (unexpected). To add the translative case ending -ksi, the -maton ending changes to its stem form -mattoma-, resulting in odottamattomaksi.

Why are odottamattomaksi and ajaksi in the translative case (-ksi)?

The translative case is often used to express a duration of time that an action is intended or expected to last. Here, it translates perfectly to the English word 'for' in the phrase 'for an unexpected amount of time'.

What is the base form of katosi, and why does it have a t instead of a d?

The base form is the verb kadota (to disappear). This is a verb type 4, which means it undergoes reverse consonant gradation. The dictionary form has the weak grade (d), but conjugated forms like the past tense katosi use the strong grade (t).

Is loppupomo a common word?

Yes! It is a compound word made of loppu (end) and pomo (boss). It is exactly how you say 'final boss', such as in a video game, in Finnish.