What is another name for reason?

There are many synonyms for "reason", depending on the specific context you're looking for. Here are a few options:

General synonyms:

* Logic

* Intellect

* Understanding

* Rationale

* Justification

* Grounds

* Basis

* Cause

* Motivation

More specific synonyms:

* For "reason" as a faculty of the mind: intellect, understanding, mind, judgment, thought

* For "reason" as a logical argument: rationale, justification, grounds, basis, proof

* For "reason" as a cause: cause, motivation, purpose, explanation, origin

The best synonym for "reason" depends on the specific context of your sentence.