contrary >> /ˈkɑntrɛri/
Definition: [noun] The opposite.
Example: the magazine has proved that the contrary is true
Definition: [noun] A contrary proposition.
Example: For what are contraries cannot coincide in one and the same subject.
Definition: [adjective] Opposite in nature, direction, or meaning.
Example: he ignored contrary advice and agreed on the deal
Definition: [adjective] Perversely inclined to disagree or to do the opposite of what is expected or desired.
Example: she is sulky and contrary where her work is concerned