twenty-twenty

American  

[twen-tee-twen-tee, twuhn-tee-twuhn-tee] / ˈtwɛn tiˈtwɛn ti, ˈtwʌn tiˈtwʌn ti /

Or 20/20

adjective

1. Ophthalmology. having normal visual acuity.

2. keenly or acutely perceptive.

   an opinion based on twenty-twenty hindsight.

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twenty-twenty British  

adjective

1. med (of vision) being of normal acuity: usually written 20/20

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twenty-twenty Scientific  

/ twĕn′tē-twĕn′tē /

1. Having normal visual acuity. A person with twenty-twenty vision can see type as small as one-third of an inch at a distance of twenty feet.

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Etymology

Origin of twenty-twenty

First recorded in 1875–80; extracted from Ophthalmic Manual (1875), by Sir Thomas Longmore, chief medical officer of the British armed forces

Example Sentences

John Cammegh KC, prosecuting, said police analysis of Mr McCullum's phone "provides a twenty-twenty insight not just as to what the defendant was browsing online, but, equally, into his very mindset".

From BBC • Nov. 3, 2022

Despite what cynics blessed with the gift of twenty-twenty hindsight might have you believe, Pele’s suggestion that Colombia would at least make the semi-finals of USA 94 wasn’t a crazy shot in the dark.

From The Guardian • Apr. 3, 2018

To tell you the truth, hindsight being twenty-twenty, I think that most guys should have to wait, proving to the team and the company that they want to be a part of that program.

From Time Magazine Archive

Out of genuine affection and twenty-twenty vision, Author Lee has fashioned the best of the few U.S. books about Greece, even including Henry Miller's dithyrambic tribute, The Colossus of Maroussi.

From Time Magazine Archive

“My eyes are twenty-twenty, my hearing is perfect, and my arthritis is gone!”

From "The Fourteenth Goldfish" by Jennifer L. Holm