Coincidence is a meaninglessly simultaneous occurence. Synchronicity, a relatively new word, implies that there is meaning to it.
The opposite of opposites is similarities or likenesses.
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...
Opposite of Up is down. So, opposite of the opposite of Up is Up itself.
no the opposite of the opposite is the original No, but backwards backwards is backwards backwards.
Right. Because the opposite of right is left, and left is the opposite of right.