Use 'rearward' to describe something moving towards the back, especially in a three-dimensional space.

Spatial Movement

'Rearward' indicates direction, not the action of reversing; it doesn't mean going back in time or undoing actions.

Not Reversal

Can be used figuratively to describe a return to older methods or styles.

Use 'rearward' to emphasize the orientation of objects or people, not just movement.

Be clear that 'rearward' is direction-focused; it's not the same as 'awkward' or 'clumsy.'

In transportation, 'rearward' clearly specifies the direction of travel or a part of a vehicle.