reasoning

noun

rea·​son·​ing ˈrēz-niŋ 

ˈrē-zᵊn-iŋ

1

: the use of reason

especially : the drawing of inferences or conclusions through the use of reason

2

: an instance of the use of reason : argument

Synonyms of reasoning

• logic
• reason

Examples of reasoning in a Sentence

Could you explain your reasoning?

They told everyone the reasoning behind the decision.

a conclusion based on fallacious reasoning

Humans possess the power of reasoning.

Recent Examples on the Web

Microsoft is constructing models for generating source code, images and audio, and for reasoning, which produces answers that people can find more thoughtful but requires more time, Suleyman said. —Jordan Novet, CNBC, 17 Mar. 2026

However, a district judge sided with the state, issued a preliminary injunction and outlined his reasoning in an order Monday. —Evan Bush, NBC news, 17 Mar. 2026

Over the preceding years, Bennett had come to question the medical reasoning behind her three prior C-sections. —CNN Money, 16 Mar. 2026

The reasoning has nothing to do with dumbbells or treadmills, though. —Hunter Boyce, AJC.com, 16 Mar. 2026

Word History

First Known Use

14th century, in the meaning defined at sense 1

Phrases Containing reasoning

• line of reasoning

Rhymes for reasoning

• seasoning

Kids Definition

reasoning

noun

rea·​son·​ing

1

: the use of reason

2

: the reasons used in and the proofs that result from thought : argument