 Given the literal meaning of ‘supponere’ as “acting as subject”, it is unsurprising that several authors, even as late as Vincent Ferrer in the 1370s, restricted supposition to subject terms, preferring to speak instead of copulation as the corresponding property of the predicate. Those reservations aside, however, the natural similarity in function of subject and predicate in picking out varying classes of things while remaining a univocal term, led most authors to extend the notion of supposition to all terms. At the same time, talk of univocation was superseded by signification, by implication univocal signification unless equivocation was  identified.[6]  Burley (2000, p. 80) says that “supposition properly so called is a property of a subject term relative to the predicate”. However, “supposition taken broadly is a property of a term relative to another in a proposition. In this sense, supposition belongs to the subject as well as to the predicate, and even to the verb.” 