monster; a fictional creature with hideous traits, often evil, dangerous and associated with horror fiction / monster; a person who acts cruelly or performs very immoral acts / an ugly person / an excessively muscular person, often a man

(slang) incredible, amazing, astonishing / (slang, of a person) very muscular or excessively fit / (slang, of a person, usually followed by related activity) remarkably good at something

plural of monstro