Jennilee Marigomen altered al· tered –verb 1. to change or make different; modify: altered my will. 2. to adjust (a garment) for a better fit. 3. to castrate or spay (an animal, such as a cat or a dog). a home 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 altitude ambiance antique anonymous antler apocalyptic alligator alone altered apple-juice arm art as-az