Autark comes from ancient greek αυτάρκης (same in modern greek) which is made up from two words αυτός (he) & αρκώ (v) which means suffice, so self-sufficient.

Autark comes from ancient greek αυτάρκης (same in modern greek) which is made up from two words αυτός (he) & αρκώ (v) which means suffice, so self-sufficient. I wasn't aware that this word existed in English but I love coming across words like these that I am not aware of, though immediately understand.