Humiliatingly tells you how something happens: in a way that makes someone feel ashamed, embarrassed, and angry at being made to look weak or stupid. They lost humiliatingly means the loss itself was a public shame, not just an ordinary loss. People also stretch it, a little more lightly, in phrases like humiliatingly easy — so easy that you look foolish for ever having worried. You put it with a verb or with an adjective; it is not a word for a person.