dictionary.reference.com: Origin: 1870–75, Americanism; burglar + -ize It's old, it's popular, and it's well understood. It is certainly a valid word. Saying

dictionary.reference.com: Origin: 1870–75, Americanism; burglar + -ize It's old, it's popular, and it's well understood. It is certainly a valid word. Saying you were burgled has a Mr. Burns feel to it. It's almost always burglarized or robbed in the United States.