South and east
Usually, south is the opposite of north.
Opposite of North.
North west
North is the direction toward the North Pole or geographic North.
north east
The opposite direction for east-northeast is west-southwest.
SSW is the opposite of NNE.
If the question is asking what is opposite north on a compass then the answer is south.
No, the Earth's core is not spinning in the opposite direction. The core of the Earth rotates in the same direction as the rest of the planet, which is counterclockwise when viewed from above the North Pole.
North west
South and east
If you define one direction (for example, north) as positive, then the opposite direction is negative.