different between unslept vs unswept

English

un- +? slept

unslept (not comparable)

Not having been slept.
- 2011, Donvé Lee, An Intimate War (page 116)
  My eyes burn from sleep unslept and from tears unshed. I long for oblivion. I am impossibly tired.
Not having been slept (in, on, with, etc.); usually with a preposition.
- 1972, Monica Dickens, World's End in Winter
  Tom's room was empty, the bed unslept in.
Not having slept; sleep-deprived.
- 1870, Geoffrey Chaucer, David Laing Purves, Edmund Spenser, The Canterbury tales and Faerie Queene:
  […] With visage and eyes all forwept, / And pale, as a man long unslept, […]

unslept

un- +? swept

unswept (comparative more unswept, superlative most unswept)

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