eu > en 
1 postp. (aurreko sintagmak -en edo -i duela) against, contrary to; adversely; anti-, -proof (in compounds and derived forms)
ez nago inoren kontra: I'm not against anyone
eraikina segurua da lapurren kontra: the building is secure against thieves
abortuaren kontrako: anti-abortion
suaren kontra babestua: fireproof
2 postp. (aurreko sintagmak -en edo -i duela) [lekua] against, on, to; leaned against/on
bularraren kontra estutu zuen: she pressed him to her bosom
autoak hormaren kontra jo zuen: the car crashed into the wall
kontra