Incognito
Part of speech: adjective
Definition: Without being known; in disguise; in an assumed character, or under an assumed title
Part of speech: noun
Definition: One unknown or in disguise, or under an assumed character or name. The assumption of disguise or of a feigned character; the state of being in disguise or not recognized.
Part of speech: adverb
Definition: without revealing one's identity
Example sentence: I have no friends here apart from the dudes at my record label, and I didn't go to school with no one. Nobody knows me - I'm incognito. It's all new, all fun.
Concealed
Part of speech: verb
Definition: To hide something from view or from public knowledge, to try to keep something secret.
Example sentence: Art is a step from what is obvious and well-known toward what is arcane and concealed.