retrospectively
adverb
UK/ˌret.rəˈspek.tɪv.li/
US/ˌret.rəˈspek.tɪv.li/
Definitions of retrospectively adverb
in a manner that involves looking back at past events or situations
Retrospectively, that decision seems to have been a mistake.
Retrospectively, she realized she could have done a better job.
Looking back retrospectively, that trip was absolutely wonderful.