by far
By a large amount; by a lot. Most of the kids in the class are good artists, but Susie is by far the best—she's our resident Picasso!
by far
Also, far and away. To the greatest degree, by a large margin. For example, She is by far the most experienced member of the cast, or, as Anthony Trollope wrote, "He was far and away the cleverest of his party" ( The Duke's Children, 1880). The first term dates from the late 1700s, the variant from the mid-1800s. Also see by half.
by ˈfar
by a very great amount; much: This is by far the best painting/This is the best painting by far.Our holiday this year was better by far than last year’s. by far
To the most extreme or evident degree: She is by far the best executive in the company.