- As if; as though; as it were; in a manner sense or degree; having some resemblance to; qualified; -- used as an adjective, or a prefix with a noun or an adjective; as, a quasi contract, an implied contract, an obligation which has arisen from some act, as if from a contract; a quasi corporation, a body that has some, but not all, of the peculiar attributes of a corporation; a quasi argument, that which resembles, or is used as, an argument; quasi historical, apparently historical, seeming to be historical.