hindsight

/หˆhaษชndsaษชt/
noun
  1. 1

    Realisation or understanding of the significance and nature of events after they have occurred

    โ€œIn hindsight, I should have quit that job sooner.โ€

  2. 2

    The rear sight of a firearm

Antonyms

Source: https://en.wiktionary.org/wiki/hindsight