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Related to monniker: moniker
A personal or informal title, nickname, or term of address by which one is known. He's known as Stink Mouth around here, and how he came to have that moniker is a pretty hilarious story. There's a woman in the southeast part of the city who goes by the moniker The Collector—she's the person you need to help find what you're looking for.
monikerand monniker (ˈmɑnəkɚ)
n. a nickname. With a moniker like that, you must get in a lot of fights.