adversarial.

Involving opposing parties who challenge one another's positions.

Use it for

Words that belong together

• adversarial debate
• adversarial process

On the page

The hearing became adversarial once the documents were disputed.

Usage notes

Primary category: academic / formal. Forms: Comparative more adversarial; superlative most adversarial 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: analysis, evaluation. Commonness: moderately common.