Antonym of REAR

Rear : the back part of something, especially a building or vehicle.
Front : the side or part of an object that presents itself to view or that is normally seen or used first; the most forward part of something.
Foreground : the part of a view that is nearest to the observer, especially in a picture or photograph.
Forehead : the part of the face above the eyebrows.
Forward : in the direction that one is facing or travelling; towards the front.

Antonym of Rear is Front