Learn Danish: Kan du gætte om mysteriet er farligt? - Can you guess if the mystery is dangerous?

In Danish, hvis is used for conditions (like "If it rains, I will stay home"). The word om is used for indirect yes/no questions, meaning "if" or "whether". Since you are asking whether the mystery is dangerous, om is the correct choice.

Why is the word order om mysteriet er farligt instead of reversing the verb and subject?

The word om introduces a subordinate clause (a dependent part of the sentence). In Danish subordinate clauses, you don't swap the subject and verb like you normally do to ask a question. The subject (mysteriet) stays right after om, followed by the verb (er).

The base word is et mysterium. How does it become mysteriet for "the mystery"?

For neuter words ending in -ium (like mysterium or gymnasium), you drop the -um and add the standard definite ending -et. That is why mysterium becomes mysteriet.

Is there a rule for why the adjective farlig gets a -t at the end?

Yes! Adjectives must match the gender of the noun they describe. Because "the mystery" is a neuter noun (an et-word), the adjective takes the neuter form, changing farlig (dangerous) to farligt.