different between appreciable vs appreciably

English

From French appréciable.

appreciable (comparative more appreciable, superlative most appreciable)

Large enough to be estimated; perceptible; considerable.
- 2002, John J. Mearsheimer, "Realism, the Real World, and the Academy," in Realism and Institutionalism in International Studies (M. Brecher and F. P. Harvey, eds.), ?ISBN, p. 27:
  If NEAsia were a zone of peace, those American forces would be unnecessary and they could be sent home and demobilized, saving the U.S. taxpayer an appreciable sum of money.

appreciable in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.

From appreciable +? -ly.

appreciably (comparative more appreciably, superlative most appreciably)

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