impossibility.

A condition in which something cannot occur or be achieved.

Use it for

Words that belong together

• logical impossibility
• practical impossibility

On the page

The timetable created a practical impossibility.

Usage notes

Primary category: analysis / argumentation / evidence. Forms: Countable or uncountable by context; countable singular impossibility; plural impossibilities. 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. Commonness: moderately common.