adv. (f. prec., or UN-1 11.)
1603. Ld. Herbert, Corr., in Life (1886), 335. As knowing that his worthy disposition that began it of himself, will continue it as undeservedly as he did unmatchably enter into it.
1609. W. M., Man in Moon, G 2 b. Seeing therefore it is such an inestimable iewell, how warily are you to keep it? so vnmatchably allied, how much are you to make of it?
1882. G. P. Lathrop, in Harpers Mag., LXV. 548. The unmatchably pale bright yellow-white of the grain fields along the valley was spotted with the dark clumps of olive-trees.