Opposite or contrary

• Moving or directed backward
• Set to the less-used or nonstandard position
• Upside down or with orientation inverted

In a backward way or direction

• With orientation upside down

The opposite of something

• A setback or defeat
• The back side of a coin or object
• Backward motion or the gear for moving backward

To turn or move to face the opposite direction

• To invert or turn inside out
• To change to the opposite or undo
• To drive a vehicle backward
• To overturn or revoke a decision or law