home m Derek Vincent monster mon⋅ster [mon-ster] –noun 1. a legendary animal combining features of animal and human form or having the forms of various animals in combination, as a centaur, griffin, or sphinx. 2. any creature so ugly or monstrous as to frighten people. 3. any animal or human grotesquely deviating from the normal shape, behavior, or character. 4. a person who excites horror by wickedness, cruelty, etc. 5. any animal or thing huge in size. 6. anything unnatural or monstrous. a b c d e f g h i j k l m n o p q r s t u v w x y z missing money mist morning monster morbid motel mural motivation mustache mirror moon