Definition of "retrospectively" [re•tro•spec•tive•ly]

• In a retrospective manner. (adverb)

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• "Boss ‘put ABCD in retrospectively dated before the arrest’ on January 6, 2010 at 1: 39 pm Retired Sgt"
• "In fact, if I'm deluding myself at all, I would bet that it's in retrospectively enjoying a performance more — my tendency is to store away the good parts of a concert, and let the mediocre moments fade from memory."
• "Our memories are spurious, like our memories of dreams; the blank are filled in retrospectively."