Another Word for Reason: 19 Synonyms with Examples
A reason is a cause or explanation for something, or the ability to think logically. Swap it to be more precise about whether you mean a cause, a motive or a justification.
As a noun: a cause or explanation
As a noun: the ability to think clearly
- logic
- sense
- judgement
- rationality
- reasoning
- intellect
As a verb: to think something through logically
Need a different word?Look up any word in the synonym finder →
How they differ
Synonyms share a meaning, not always a tone. Here is when to pick each of the main options.
- cause
- Something that makes an event happen; more neutral and scientific.
- explanation
- A reason given to make something understood.
- grounds
- A reason that justifies an action or belief; often legal or formal.
- motive
- A personal reason for doing something, often in crime or behaviour.
- rationale
- The set of reasons behind a decision or plan; formal.
- logic
- Clear thinking, or the reasoning behind an argument.
Example sentences
- cause: Investigators are still looking for the cause of the fire.
- explanation: He gave no explanation for his absence.
- grounds: There are no grounds for believing the story.
- motive: The police could find no motive for the attack.
- rationale: The report sets out the rationale for closing the branch.
- logic: I can't follow the logic of paying more for less.
Opposite of reason
- unreason
- irrationality
More from WordNet
Less common or more specialised words WordNet lists for other senses of “reason”. Check the meaning before you use one.
noun: ground, understanding, reasonableness
WordNet 3.1, Princeton University. Used under the WordNet licence.
Frequently asked questions
What is another word for “reason”?
The most useful alternatives are “cause”, “explanation”, “grounds”, “basis”, “motive”. For the main sense (a cause or explanation), “cause” is usually the closest swap.
What is the difference between “cause” and “explanation”?
cause: Something that makes an event happen; more neutral and scientific. explanation: A reason given to make something understood.
What is the opposite of “reason”?
Common antonyms are “unreason”, “irrationality”.