denn

conjunction

1. for; because; since

   “Ich möchte diese Hose kaufen, denn sie gefällt mir sehr.”

2. than

adverb

1. so, then, ever, but, now; used for emphasis or to express interest, surprise or doubt, or in rhetorical questions

   “Wieso denn?”

2. thus, so; expresses a consequence; see usage notes

3. then, after that, in that case

4. unless (marks a negatively exceptive clause, with subjunctive)

   “Man sollte diesseits des Grabes niemanden preisen, er habe denn glücklich vollendet.”