Main Entry: twen·ty–twen·ty

Variant(s): or 20/20 \-ˈtwen-tē, -ˈtwən-\

Function: adjective

Etymology: from the testing of vision by reading letters at a distance of 20 feet

Date: 1875

1 of the human eye : meeting a standard of normal visual acuity <twenty–twenty vision>
2 : marked by facilely accurate discernment, judgment, or assessment <hindsight is twenty–twenty>