Learn Swedish: Vad oväntat beslutet var! - How unexpected the decision was!

In Swedish exclamations, Vad is used with an adjective or adverb to express "How...!" (like "How unexpected!"). While Hur normally means "how" in direct questions, you must use Vad to build this kind of exclamation.

Why does oväntat end in a -t here?

The adjective oväntad (unexpected) describes beslutet (the decision). Because ett beslut is a neuter word, the adjective takes the neuter -t ending to become oväntat. Even though it has moved to the front of the sentence after Vad, it still agrees with the noun it describes.

Why is the verb var at the very end of the sentence?

Exclamatory clauses starting with Vad use subordinate clause word order. This means the subject (beslutet) must come before the verb (var). It helps to imagine a standard statement where the adjective was simply pulled to the front for emphasis: Vad oväntat beslutet var!

Why is beslutet in the definite form instead of being "ett beslut"?

When making an exclamation about a specific situation or object, Swedish uses the definite form, just like English does. You are commenting on "the decision" (beslutet) that was just made, so the indefinite "a decision" (ett beslut) wouldn't fit the context.