Strongest Opposites:
* Resist: This implies actively fighting against something.
* Defy: This emphasizes a refusal to submit to authority.
* Refuse: This is a direct and simple denial.
More nuanced opposites:
* Protest: This implies expressing dissent, often publicly.
* Object: This highlights a formal disagreement.
* Disagree: This is a general term for having a different opinion.
* Challenge: This suggests questioning or contesting something.
* Dispute: This implies a more formal argument or disagreement.
Other potential opposites:
* Demand: If acquiescence means accepting something, the opposite could be demanding something different.
* Advocate for: If acquiescence means accepting the status quo, the opposite could be advocating for change.
The best opposite word will depend on the specific situation and the nuance you want to convey.