different between desponding vs irretrievable

English

desponding

desponding (comparative more desponding, superlative most desponding)

That causes despondency; disheartening.
- 1782, Frances Burney, Cecilia, V.x.1:
  [T]he doubts, apprehensions, and desponding suspense which had accompanied her setting out, were now all removed, and certainty, ease, the expectation of happiness, and the cessation of all perplexity, had taken their place.

desponding (plural despondings)

A feeling or expression of despondency.
- 1753, Edward Moore, The Gamester
  These are the despondings of men without money; but let the shining ore chink in the pocket, and folly turns to wisdom.

ir- +? retrievable

irretrievable (comparative more irretrievable, superlative most irretrievable)

irretrievable in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
irretrievable in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.

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