go one better (than somebody)
to do something more successfully than someone else

[TahlilGaran] Dictionary of Contemporary English ▲

go one better
go one better (than (someone/something))
to do more or be better than someone or something else.
When her friend picked up a pair of those new spike-heeled boots, Shirley went one better and ordered a custom-made pair.

Usage notes: sometimes used in the form go someone or something one better:
Her opponent made a strong statement against her, but she went him one better by proving him wrong.

moved from 'one' and edited--cgb9/02
to do something better than it has been done before.
The company has decided to go one better than its rivals by offering free drinks with every burger.

He set the world record last year. This year he would like to go one better by beating his own record.

[TahlilGaran] English Idioms Dictionary ▲

go one better
to do something better than someone else, to do more than someone
I decided to go my friend one better and I bought a more expensive present for my girlfriend.

[TahlilGaran] English Idioms Dictionary ▲

go somebody one better
v. phr., informal To do something better than (someone else); do more or better than; beat.
Bill's mother gave the boys in Bill's club hot dogs for refreshments, so Tom's mother said that she would go her one better next time by giving them hot dogs and ice cream.
John made a good dive into the water, but Bob went him one better by diving in backwards.

[TahlilGaran] English Idioms Dictionary ▲

go someone one better
to do something better than someone else, to do more than someone
I decided to go my friend one better and I bought a more expensive present for my girlfriend.

[TahlilGaran] English Idioms Dictionary ▲