Verbally:
* Disagreeing: "I disagree with your proposal."
* Opposing: "I oppose the new law."
* Protesting: "We are protesting against the unfair treatment."
* Criticizing: "I have some criticisms of your work."
* Challenging: "I challenge your assumptions."
* Refusing: "I refuse to do that."
* Denying: "I deny that claim."
Nonverbally:
* Shaking your head: This indicates disagreement.
* Frowning: This shows disapproval.
* Crossing your arms: This can be a sign of resistance.
* Turning away: This indicates disinterest or unwillingness to participate.
In writing:
* Writing a letter of complaint: This can be used to formally express disapproval.
* Signing a petition: This is a way to show dissent and support a cause.
* Posting online comments or articles: This can be used to express opinions and challenge others' views.
The specific words and actions used to express disapproval, object, or dissent will depend on the situation and the relationship between the parties involved. It's important to communicate respectfully and clearly, while still expressing your honest opinion.