disagreer

plural disagreers

1. One who disagrees.

   Sir, is not that a strange answer, in you, that know there is fire to awe disagreers in all matters of faith?

   a. 1660, Henry Hammond, a sermon

   1 more example

   Accordingly, any instance of disagreement involves a potential burden on the speaker (rather than the hearer) which a disagreer has to gauge and which influences whether and how the disagreement will eventually be performed.

   2014, Karen Glaser, Inductive or Deductive?