Wiktionary
vb. To develop insufficiently.
WordNet
v. process (a film or photographic plate) less than the required time or in an ineffective solution or at an insufficiently high temperature; "These photos are underdeveloped"
Usage examples of "underdevelop".
Bergstrasse, Upper Franconia including the Fichtel Mountains, even Weimar in the Russian occupation zone -- where he stops at the Hotel Elephant -- and the Bavarian Forest, an underdeveloped region.
As the narrator of his own barbarism, Joel seemed more like a confused, emotionally underdeveloped man than anything else.
Why was it that fashion designers wanted women to look underdeveloped, like young boys?
Still, the Empire was underdeveloped, India slept in the Middle Ages, the Dominions lay empty, with foreigners jealously barred out, and even England was full of slums and unemployment.
Afghanistan is one of the most underdeveloped countries in the world, whereas Iraq was one of the most modern in the Arab world--a relative statement but still a significant one.
This is more likely against a modernized, developed state than an underdeveloped government.