Vaog- is a root meaning "dirt, filth". Add -enka to make an adjective and you have vaogenka, "dirty".
With -emagon to make verbs, you have vaogemagon, "to sully". It inflects as vaogēda to make the participle "sullied"; turn that into a substantive, and it becomes vaogēdy.
Finally, do-, related to daor, is a negation. So you end up with dovaogēdy, "unsullied".
This is how a conlang should be done =)
Kirimvose! To make it easier: http://www.youtube.com/watch?v=yUWR8wvqQw8&t=2m20s
Not pure fan service.
It helps teach many things about the language (such as for instance, how to take an root or adjective and turn it into a description that contains itself)
However, this word can also be used for other things as well as it is built from meaning of "one who is undirtied" or "pure one". Applied to many cultures, people use words like this already and some even obsess over purity.
Not really. They fight like Spartans but that's about it. Spartans were free people that were very strong warriors because their culture demanded it. The Unsullied are slaves that were castrated and trained to be soldiers that don't feel pain or emotions and only obey their masters.