Dissentient

The vote was taken at once, and it was agreed by an overwhelming majority that rats were comrades. There were only four dissentients, the three dogs and the cat, who was afterwards discovered to have voted on both sides.

Source: wiktionary

Naturally, the wisdom of striking to remedy grievances was questioned; but there were few dissentients from the view that the Government and B.T.C. are mishandling the human relations involved.

Source: wiktionary

Moody and Sankey had sung their way into every dissentient chapel, and Boshy appreciated their words thoroughly, and sang them to a wrong tune incessantly.

Source: wiktionary

A dissentient opinion came from the aunt.

Source: wiktionary