1) Antagonism 2) Antithesis 3) Clashing 4) Contradiction 5) Contrast 6) Foil 7) French word used in English 8) Oppositeness 9) Opposition 10) Repugnance 1) Counteraction 2) Inversion 
• (n.) Something which is contrary to, or inconsistent with, something else; an inconsistency. • (n.) The state or quality of being contrary; opposition; repugnance; disagreement; antagonism.
Con`tra·ri'e·ty noun ; plural Contrarieties . [ Latin contrarietas : confer French contrariété .] 1. The state or quality of being contrary; opposition; repugnance; disagreement; antagonism. « There is a contrariety between those things that consci...
[n] - the relation between contraries
[Treasure Island] the condition of being contrary (in opposition); here, the wind and current are in the same direction.
noun the relation between contraries
the quality or state of being contrary. · something contrary or of opposite character; a contrary fact or statement. · the relation between contraries.