1. (prep) en contra de - we're against the plan: estamos en contra del plan opposed to: ideologically

2. (prep) contra - he fought against the fascists: luchó contra los fascistas they took measures against corruption: tomaron medidas contra la corrupción we were cycling against the wind: pedaleábamos con el viento en contra it's against her principles: va en contra de sus principios that is against the rules: eso no está permitido por el reglamento : physically

3. (prep) contra - he leant against the fence: se apoyó contra la valla in contact with