antagonism.

1. Hostility or opposition between people, ideas, or forces.

2. An interaction in which one substance or process reduces or blocks another's effect.

Use it for

Words that belong together

• mutual antagonism
• political antagonism

On the page

Mutual antagonism prevented even routine cooperation.

Usage notes

Primary category: academic / formal. Forms: Usually uncountable; no ordinary plural in this sense. 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, explanation, evaluation. Commonness: moderately common.