An assumed moniker is a pseudonym or alias used by an individual to conceal their true identity. It is often used by authors, artists, and other public figures who wish to remain anonymous. The term 'assumed moniker' is derived from the Latin phrase 'assumere nomen, ' which translates to 'take a name.' The crossword solution for this term is ANONYM, a six-letter word meaning 'having an unknown or unacknowledged name.'