uncertain

Doubtful

Questionable

Debatable

Controversial

Arguable

disputable

1 Antonym: Uncertain

She felt uncertain about her decision to pursue a new career.

The outcome of the negotiation remained uncertain until the last moment.

In times of crisis, people often feel anxious and uncertain.

His future plans were still uncertain as he considered various options.

2 Antonym: Controversial

The new policy was highly controversial and sparked intense debate.

Her book tackled a controversial topic that divided critics and readers.

The film's controversial scenes led to widespread public protests.

The politician's statements on immigration were deemed controversial by many.

3 Antonym: Disputable

The accuracy of the historical account was highly disputable among scholars.

His claim about the product's effectiveness was disputable without further evidence.

The scientist presented data that some considered disputable due to methodological flaws.

The judge's interpretation of the law was disputable and led to an appeal.

4 Antonym: Refutable

The scientist presented refutable evidence to challenge the existing theory.

Her argument was strong, but the opposing side offered refutable counterpoints.

The claims in the report were easily refutable with accurate data.

Despite being initially convincing, the hypothesis proved refutable through further research.