objector
/əbˈdʒɛktər/Definitions
1. noun
a person who expresses opposition or disagreement, especially to a plan, proposal, or law
“The government received strong objections from the public about the new tax policy.”
2. noun
a person who objects to a particular thing or activity, especially on moral or ethical grounds
“She became an objector to the war, citing the high number of civilian casualties.”
3. verb
to express opposition or disagreement, especially to a plan, proposal, or law
“The councilor objected to the proposal, citing concerns about the budget.”