different between appreciation vs unappreciatively

English

From French appréciation.Morphologically appreciate +? -ion

appreciation (countable and uncountable, plural appreciations)

A fair valuation or estimate of merit, worth, weight, etc.; recognition of excellence.
Accurate perception; true estimation.
- 2014, Ian Jack, "Is this the end of Britishness", The Guardian, 16 September 2014:
  The English, until relatively recently, seem to have imagined “English” and “British” to be interchangeable, as if Britain was just a bigger England. Our dualism gave us a better appreciation of the nation-state we lived in, though if Britain was a “nation” as well as a “state”, where did that leave Scotland?
A rise in value.

unappreciative +? -ly

unappreciatively (comparative more unappreciatively, superlative most unappreciatively)

Without showing appreciation. Ungratefully
- 1905. Proceedings of the American Antiquarian Society, Article by John Davis, Page 223
  Their peculiar ideas, instead of being sympathetically drawn from them, have been ruthlessly and unappreciatively crushed by the superior knowledge and arrogance of the white race.

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