Antonym of recent is old or past.
No. Many antiques were manufactured, just not recently.
More momentum would mean that the team has recently won several games or matches, and opposite for less momentum.
The opposite (antonym) of opposite is same.
Comparative: More recently Superlative: Most recently
Salman Khan is recently shooting for a new movie. The name of the movie is said to be Bajrang Bhaijaan. Kareena Kapoor the actress is cast opposite to him.
opposite of opposite to opposite from
An opposite of the word "to" is from.
more recently, most recently
If you have to be opposite on opposite day, that makes it a day, and then there was no opposite day. But that can't be true since you HAVE to be opposite, which means that you have to be normal even though there is an opposite day because you are supposed to be opposite on opposite day, which means that you act normal as if it was a normal day, because that is the opposite of opposite day. (This is a classic "liar's paradox". Since there is already an opposite day, you should have a normal day because that is the opposite of an opposite day. But then it is not an opposite day.)
recently
You could say that you are being "opposite of how other people are" on Opposite Day. If you say the opposite of an opposite, it is a true expression.
The opposite of up is down. So, opposite of the opposite of up is up itself.