Origin: 1350–1400; ME < MF < L
oppositus, ptp. of
oppōnere to set against.
See oppose, -ite 2 
Related forms: op⋅po⋅site⋅ly, adverb
op⋅po⋅site⋅ness, noun
Synonyms:
1. facing. 2. incompatible, irreconcilable, unlike, differing. Opposite, contrary, reverse imply that two things differ from each other in such a way as to indicate a definite kind of relationship. Opposite suggests symmetrical antithesis in position, action, or character: opposite ends of a pole, sides of a road, views. Contrary sometimes adds to opposite the idea of conflict or antagonism: contrary statements, beliefs. Reverse suggests something that faces or moves in the opposite direction: the reverse side of a coin; a reverse gear.
Antonyms:
2. same, like.