Obs. [ad. L. fallācitāt-em, n. of state f. fallax: see FALLACE a.] Fallaciousness.

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1664.  Power, Experimental Philosophy, III. 190. The old and uncomfortable Aphorism of our Hippocrates, of Nature’s obscurity, the Life’s brevity, the Senses fallacity, and the Judgement’s infirmity.

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1773.  Observ. State Poor, 49 However consistent this specious reasoning may be with … justice, its fallacity will not escape detection.

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