Origin: L. Obversus, p.p. Of obvertere. See Obvert.
2. Anything necessarily involved in, or answering to, another; the more apparent or conspicuous of two possible sides, or of two corresponding things. The fact that it [a belief] invariably exists being the obverse of the fact that there is no alternative belief. (H. Spencer)
Origin: Cf.F. Obverse, obvers. See Obverse.