Citations:oil and water

Noun: "(idiomatic) two things which are incapable of mixing or coexisting harmoniously with each other"

 * 1982, Winston Graham, The Miller's Dance, Pan Books (2008), ISBN 9780330524230, unnumbered page:
 * We are oil and water. There are few things he and I agree on but I believe we would agree on this.
 * 2005, Sean Naylor, Not a Good Day to Die: The Untold Story of Operation Anaconda, Penguin (2005), ISBN 9781101204610, unnumbered page:
 * “Their personalities are oil and water—they don't mix,” said a JSOC officer who knew both men.
 * 2009, Brian Schofield, Selling Your Father's Bones: America's 140-Year War against the Nez Perce Tribe, Simon & Schuster (2009), ISBN 9781416539933, page 31:
 * second, that the white and red man were oil and water, incapable of safely sharing a landscape.
 * 2011, Loretta M. Siani, The Alchemy of Prayer: How It Began and Why It Is the Medium of Miracles, iUniverse (2011), ISBN 9781462003174, page 47:
 * Forgiveness and making bargains are oil and water. They don't mix.