run against
US /rʌn əˈɡɛnst/
UK /rʌn əˈɡɛnst/

1.
se présenter contre, affronter
to compete against someone in an election or contest
:
•
She decided to run against the incumbent mayor in the next election.
Elle a décidé de se présenter contre le maire sortant aux prochaines élections.
•
Our team will run against the champions in the final.
Notre équipe affrontera les champions en finale.
2.
heurter, frapper contre
to hit or collide with something by running
:
•
The child accidentally ran against the wall.
L'enfant a accidentellement couru contre le mur.
•
Be careful not to run against the sharp edges.
Fais attention de ne pas heurter les bords tranchants.