عكس

[ عَكْسٌ ذ , an inf. n. used as an epithet in which the quality of a subst. predominates; The reverse either in respect of order or of sense, i. e. the converse or the contrary, of a proposition &c. You say, هٰذَا عَكْسُ هٰذَا This is the reverse, &c., of this. ]