one in a hundred(redirected from on-in-a-hundred)
one in a hundred
Exceptionally uncommon, unique, or excellent. Hyphenated if used before a noun. This is a one-in-a-hundred opportunity for us—we'd be fools not to seize it while we have the chance! My grandmother really was one in a hundred, and we're all very blessed to have had her in our lives.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.