Synonyms for Retrospective:

adj.

backward-looking (adjective)
pensive, recollective, reflective.
concerned with past (adjective)
retroactive.
ex post facto (adjective)
retroactive.

n.

civil, criminally, extraterritorial, historical, thoughtful, pensive, antitrust, forensic, enabling, criminal, reflective, common-law, recollective, extrajudicial, effective. date back to, the annals of something, rewrite history, historically, those were the days, early, in retrospect. exposition, viewing, trade show, exhibit, roadshow, fair, expo, exhibition, show, private showing. retrospective (noun)
ex post facto, retro, retroactive.

Other synonyms:

show, thoughtful, date back to. historically. historical. early. Other relevant words:
ex post facto, recollective, exposition, pensive, exhibition, in retrospect, historically, reflective, exhibit, early, thoughtful, show.

Usage examples for retrospective

  1. Contemporary science, with its retrospective inquiries into origins in the past, its everyday observation of the present, is apt practically to overlook that the highest criterion and achievement of science is not to decipher the past, nor record the present, not even to interpret both. – Civics: as Applied Sociology by Patrick Geddes
  2. He's anxious to have us think well of him- a kind of retrospective vanity. – The Main Chance by Meredith Nicholson
  3. It is therein declared that no retrospective laws shall be passed. – Select Speeches of Daniel Webster by Daniel Webster