Get one up on someone - Idioms by The Free Dictionary
get one up on (someone or something) (redirected from get one up on someone)
get one up on (someone or something)
To attain an advantage over someone or something. I'm trying to get one up on the competition by praciticing in real-world conditions.
be/get/have one ˈup on somebody (informal) be in a better position than somebody; have an advantage over somebody: Why do you always have to be one up on everybody else? ▶ one-ˈupmanship noun (disapproving) the skill of getting an advantage over other people