A fucked up nickname that somewhat resembles your proper name, and even if it doesn't, is something you eventually resort to answering to.
My co-worker's real name is Meredith, but our boss calls her by her nomonym, Merm-the-worm, because she is tall and thin (and because he is a jackass).
A misspelled synonym. Nymoyms are often used by illiterates or people who type too fast and don’t care to correct it. The name stems from the norwegian family line of Nymoen, who often uses nymonyms.