To declare; assert; affirm; specifically, to affirm as an attribute or quality of something; attribute as a property or characteristic.To assert, as a proposition or argument, upon given grounds or data; found; hence, to base, as an action, upon certain grounds or security: as, to predicate a loan.Predicated; belonging to a predicate; constituting a part of what is predicated or asserted of anything; made, through the instrumentality of a verb, to qualify its subject, or sometimes its direct object: thus, in the following sentences the italicized words are predicate: he is an invalid; he is ill; it made him ill; they elected him captain.n. That which is predicated or said of a subject in a proposition; in grammar, the word or words in a proposition which express what is affirmed or denied of the subject; that part of the sentence which is not the subject. See proposition.n. A class name; a title by which a person or thing may be known, in virtue of belonging to a class.