From The Collaborative International Dictionary of English v.0.48 :
Persuasive \Per*sua"sive\, n.
That which persuades; an inducement; an incitement; an
exhortation. -- Per*sua"sive*ly, adv. --
Per*sua"sive*ness, n.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
persuasiveness
n 1: the power to induce the taking of a course of action or the
embracing of a point of view by means of argument or
entreaty; "the strength of his argument settled the matter"
[syn: persuasiveness, strength] [ant:
unpersuasiveness]