deductively.

By reasoning from premises to a conclusion that follows necessarily if the reasoning is valid.

Use it for

Words that belong together

• reason deductively
• deductively valid

On the page

The conclusion followed deductively from the stated premises.

The essay reasoned deductively but relied on an assumption the evidence did not establish.

Usage notes

Primary category: academic / formal. Forms: Invariable adverb; no plural or tense forms. Comparison is used only where a particular degree naturally permits it. 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: inference, qualification, analysis, methodology. Disciplines: academic writing, reasoning, research. Commonness: moderately common.