see under by far.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
How to use far and away in a sentence
The ever-green roses are best for this purpose, and of these Flora is by far-and-away the nicest rose.Small Gardens | Violet Purton Biddle
He was ambitious that it should be said of him that he was far-and-away the cleverest of his party.The Duke's Children | Anthony Trollope
But he could only be far-and-away the cleverest by saying and doing that which no one could understand.The Duke's Children | Anthony Trollope