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

In AlphaSense’s platform, AI reasoning across long context windows helps compress research workflows from hours to under an hour, Greenberg said. —Sheryl Estrada, Fortune, 14 Apr. 2026

The state has not provided detailed reasoning for the non-renewals, according to AHF, which says notices did not include specific grounds. —Zachary Bynum, CBS News, 13 Apr. 2026

The most dangerous part of the ruling isn’t just its outcome but its reasoning. —A.j. Russo, Baltimore Sun, 13 Apr. 2026

On Tuesday, Anthropic announced a new AI model, Claude Mythos Preview, with advanced cybersecurity capabilities thanks to its strong coding and reasoning skills. —Ashley Capoot, CNBC, 11 Apr. 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