Definition from Wiktionary, the free dictionary
- Realisation or understanding of the significance and nature of events after they have occurred
- When you read "Seven Little Rabbits" at age 6 and read it again 15 years later, the hindsight you've developed in the time between will make you look at and think of the book very differently!
- The rear sight of a firearm
after-the-fact realisation or understanding
the phrase "in hindsight"