dubious.

1. Feeling unsure whether something is true, reliable, or wise.

2. Not clearly reliable, acceptable, or honest.

Use it for

Words that belong together

• dubious about the plan
• remain dubious

On the page

She remained dubious about the forecast despite the confident presentation.

Usage notes

Primary category: analysis / argumentation / evidence. Forms: Comparative more dubious; superlative most dubious when comparison is meaningful. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: evaluation. Commonness: moderately common.