One-up

Alternative forms

• noun: 1-up

Full definition of one-up

Verb

1. (idiomatic) To outdo, to do something slightly better than a competitor's prior effort.Every year the neighbors try to one-up each other with their holiday lights.

Noun

1. (video games) An additional life or an object that increases the player's number of chances or "lives" by one.If you hit that block, you can get a one-up.