A chance for advancement, progress or profit. / A favorable circumstance or occasion. / (nonstandard, Euro-English) opportuneness

To attempt to stop the progression of; to resist or antagonize by physical means, or by arguments, etc.; to contend against. / To object to. / To present or set up in opposition; to pose.

The action of opposing or of being in conflict. / An opposite or contrasting position.

Located directly across from something else, or from each other. / (botany) Of leaves and flowers, positioned directly across from each other on a stem. / Facing in the other direction.

Something opposite or contrary to something else. / A person or thing that is entirely different from or the reverse of someone or something else; used to show contrast between two people or two things.

In an opposite position.

Facing, or across from. / In a complementary role to. / (television) On another channel at the same time.

(countable, archaic) A cause, object, or situation of disgrace or shame. / Disgrace or bad reputation arising from exceedingly shameful behaviour; ignominy.

Someone who oppresses another or others.

(transitive) To keep down by unjust force. / (transitive) To make sad or gloomy. / (transitive, obsolete) Physically to press down on (someone) with harmful effects; to smother, crush.