This is the 136th most frequent Icelandic word.
utan
"Utan" means "outside" or "from the outside" in English.
In this sentence, 'utan' means 'outside', referring to being outside a certain location.
Hún var utan við húsið og beið okkar.
She was outside the house and waited for us.
Here, 'utan' expresses being uninvolved or outside a matter or situation metaphorically.
Ég tek ekki þátt í þessu, ég er utan við þetta mál.
I am not involved in this, I am outside this matter.
In this case, 'utan' signifies traveling abroad, as in leaving the country.