unsoundness.

1. A lack of reliable foundations or correctness in an argument, judgment or method.

2. A defect in the physical condition of a structure or material that makes it unreliable.

Use it for

Words that belong together

• logical unsoundness
• unsoundness of an argument

On the page

The argument’s unsoundness arose from a false premise rather than a faulty inference pattern.

A persuasive presentation concealed the unsoundness of the underlying comparison.

Usage notes

Primary category: analysis / argumentation / evidence. Forms: Usually uncountable; use a plural for distinct instances or types only where natural. 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: evidence, argumentation, evaluation, qualification. Disciplines: reasoning, research, essay writing. Commonness: moderately common.