Now rare. [f. as prec. + -NESS.] The quality of being effectual; the power of producing effects; efficacy.

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1545.  Pref. Hen. VIII.’s Primer, in Wilkins, Concilia, III. 873. The pith or effectualnes [Lat. vim] of the talke.

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1587.  Golding, De Mornay, xxx. (1617), 523. The effectualnesse of his doctrine in the curing of mens soules.

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1621.  Ainsworth, Annot. Pentat., Ex. iv. 7 (1627), 13/1. A thing done in the bosome, signifieth secresie, and effectualnesse.

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1673.  Stillingfl., Serm., iv. 66 (R.). From the effectualness of it in order to that end, it is the Power of God to Salvation.

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1877.  M. Arnold, Last Ess. on Ch. & Relig., 91. The way followed by Christianity has the advantage of a far greater effectualness than Butler’s way.

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