positiveness

CIDE DICTIONARY

positiveness, n. 

 The quality or state of being positive; reality; actualness; certainty; confidence; peremptoriness; dogmatism. See Positive, a.  [1913 Webster]
"Positiveness, pedantry, and ill manners."  [1913 Webster]
"The positiveness of sins of commission lies both in the habitude of the will and in the executed act too; the positiveness of sins of omission is in the habitude of the will only."  [1913 Webster]

ROGET THESAURUS

positiveness

Existence

N existence, being, entity, ens, esse, subsistence, reality, actuality, positiveness, fact, matter of fact, sober reality, truth, actual existence, presence, coexistence, stubborn fact, hard fact, not a dream, no joke, center of life, essence, inmost nature, inner reality, vital principle, ontology, existing, existent, under the sun, in existence, extant, afloat, afoot, on foot, current, prevalent, undestroyed, real, actual, positive, absolute, true, substantial, substantive, self-existing, self-existent, essential, well-founded, well-grounded, unideal, unimagined, not potential, authentic, actually, in fact, in point of fact, in reality, indeed, de facto, ipso facto, ens rationis, ergo sum cogito, thinkest thou existence doth depend on time?.