* For "against": The opposite of "contre" in the sense of "against" is "pour" (for), "avec" (with), or "en faveur de" (in favor of).
* For "opposite": The opposite of "contre" in the sense of "opposite" can be "en face de" (opposite of), "à l'opposé de" (opposite to), or "à côté de" (next to).
* For "counter": The opposite of "contre" in the sense of "counter" (as in "counter-attack") could be "en faveur de" (in favor of) or "à l'appui de" (in support of).
For a more accurate translation, please provide the sentence you are working with. This will help me understand the context and provide the most accurate opposite for "contre".