1. Imagine, conceive, conceive of, realize refer to bringing something before the mind. To imagine is, literally, to form a mental image of something: to imagine yourself in London. To conceive is to form something by using one's imagination: How has the author conceived the first act of his play? To conceive of is to comprehend through the intellect something not perceived through the senses: Wilson conceived of a world free from war. To realize is to make an imagined thing real or concrete to oneself, to grasp fully its implications: to realize the extent of one's folly.

Did you mean imagineer?