Absent words - I

What is this?
Occasionally I had to translate from Serbian to English, and hit my head against several walls, as it happens to any translator. One of these were the words which are absolutely missing in English. In several cases I actually asked Anglophones for help, but didn't get much.The missing Serbian words are described to the best of my ability.
15-VIII-2006 - 19-I-2021 go home  
The word I can't translate
Description of a possible translation
inostranstvo
What is abroad. Set of all the foreign countries as a whole.
istomišljenik
person who is of the same opinion as one is one's istomišljenik
izuti se
to unshoe (oneself), also means unsock - relieve (oneself) of any footwear. Opposite of "obuti se"