dissentient

Etymology
From the,.

Noun

 * 1) A dissenter.

Adjective

 * 1) Dissenting; of a different opinion.
 * 2) * 1914,, ‘The Story-teller’, Beasts and Superbeasts, Penguin 2000 (Complete Short Stories), p. 354:
 * A dissentient opinion came from the aunt.
 * A dissentient opinion came from the aunt.