The Swedish word for 'Crazy' is 'Galen'.
Idiot is idiot in Swedish. It isn't pronounced the same way as in English tho. It's pronounced with a long "o", kinda like you would say "woot". Just say "idioot" with a similar o-sound.
Crazy is galen or galet depending on the grammatical gender of the word you are describing.
And is "och" in swedish.
På svenska
"King" in Swedish is "kung".
Equality is "jämlikhet" in Swedish.
School is skola in Swedish.
Adventures is äventyr in Swedish.
29 is tjugonio in Swedish.
Small is liten in Swedish.
Vacation is lov in Swedish.
Celebrate is fira in Swedish.