Rationale vs. Reason

Rationalenoun

An explanation of the basis or fundamental reasons for something.

Rationalenoun

A justification or rationalization for something.

Rationalenoun

An explanation or exposition of the principles of some opinion, action, hypothesis, phenomenon, or the like; also, the principles themselves.

Rationalenoun

(law) an explanation of the fundamental reasons (especially an explanation of the working of some device in terms of laws of nature);

Reasonnoun

A cause:

Reasonnoun

That which causes something: an efficient cause, a proximate cause.

Reasonnoun

A motive for an action or a determination.

Reasonnoun

An excuse: a thought or a consideration offered in support of a determination or an opinion; that which is offered or accepted as an explanation.

Reasonnoun

(uncountable) Rational thinking (or the capacity for it); the cognitive faculties, collectively, of conception, judgment, deduction and intuition.

Reasonnoun

(obsolete) Something reasonable, in accordance with thought; justice.

Reasonnoun

Ratio; proportion.

Reasonverb

(intransitive) To deduce or come to a conclusion by being rational

Reasonverb

(intransitive) To perform a process of deduction or of induction, in order to convince or to confute; to argue.

Reasonverb

(intransitive) To converse; to compare opinions.

Reasonverb

(transitive) To arrange and present the reasons for or against; to examine or discuss by arguments; to debate or discuss.

Reasonverb

To support with reasons, as a request.

Reasonverb

(transitive) To persuade by reasoning or argument.

Reasonverb

To overcome or conquer by adducing reasons.

Reasonverb

To find by logical process; to explain or justify by reason or argument.

Reasonnoun

A thought or a consideration offered in support of a determination or an opinion; a just ground for a conclusion or an action; that which is offered or accepted as an explanation; the efficient cause of an occurrence or a phenomenon; a motive for an action or a determination; proof, more or less decisive, for an opinion or a conclusion; principle; efficient cause; final cause; ground of argument.

Reasonnoun

The faculty or capacity of the human mind by which it is distinguished from the intelligence of the inferior animals; the higher as distinguished from the lower cognitive faculties, sense, imagination, and memory, and in contrast to the feelings and desires. Reason comprises conception, judgment, reasoning, and the intuitional faculty. Specifically, it is the intuitional faculty, or the faculty of first truths, as distinguished from the understanding, which is called the discursive or ratiocinative faculty.

Reasonnoun

Due exercise of the reasoning faculty; accordance with, or that which is accordant with and ratified by, the mind rightly exercised; right intellectual judgment; clear and fair deductions from true principles; that which is dictated or supported by the common sense of mankind; right conduct; right; propriety; justice.

Reasonnoun

Ratio; proportion.

Reasonverb

To exercise the rational faculty; to deduce inferences from premises; to perform the process of deduction or of induction; to ratiocinate; to reach conclusions by a systematic comparison of facts.

Reasonverb

Hence: To carry on a process of deduction or of induction, in order to convince or to confute; to formulate and set forth propositions and the inferences from them; to argue.

Reasonverb

To converse; to compare opinions.

Reasonverb

To arrange and present the reasons for or against; to examine or discuss by arguments; to debate or discuss; as, I reasoned the matter with my friend.

Reasonverb

To support with reasons, as a request.

Reasonverb

To persuade by reasoning or argument; as, to reason one into a belief; to reason one out of his plan.

Reasonverb

To overcome or conquer by adducing reasons; - with down; as, to reason down a passion.

Reasonverb

To find by logical processes; to explain or justify by reason or argument; - usually with out; as, to reason out the causes of the librations of the moon.

Reasonnoun

a rational motive for a belief or action;

Reasonnoun

an explanation of the cause of some phenomenon;

Reasonnoun

the capacity for rational thought or inference or discrimination;

Reasonnoun

the state of having good sense and sound judgment;

Reasonnoun

a justification for something existing or happening;

Reasonnoun

a fact that logically justifies some premise or conclusion;

Reasonverb

decide by reasoning; draw or come to a conclusion;

Reasonverb

present reasons and arguments

Reasonverb

think logically;

Reason

Reason is the capacity of consciously applying logic to seek truth and draw conclusions from new or existing information. It is closely associated with such characteristically human activities as philosophy, science, language, mathematics, and art, and is normally considered to be a distinguishing ability possessed by humans.