What is the origin of retrospection?
Retrospection, and the slightly earlier noun retrospect, are based on retrospect-, past participle stem of New Latin retrōspicere “to look,” based on Latin adverb retrō “backward, back, behind” and specere “to look (at).” Retrospection, then, is the act of looking back, as many do when reflecting at the end of the year. The stem retrospect– may be partly based on (pro)spect, from Latin prōspectus “outlook, view,” composed of prō “before, in front of, for” and the same specere. Latin specere is the ultimate source of many English words involving various senses of “looking”: aspect, circumspect, expect, inspect, introspect, spectacular, and suspect, among many others. Retrospection entered English in the early 1600s.