Unfailing
Chamber's Twientieth Century Dictionary · 1908 · p. 116
un-fā′ling, adj. not failing or liable to fail.— adj. Unfail′able ( obs. ), infallible.— n. Unfail′ablene .— adv. Unfail′ingly .— n. Unfail′ingne .
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The American Dictionary and Cyclopedia (1910)
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