English dictionary

reason

/'r/i/z/@/n/

Definitions, examples, synonyms and antonyms from WordNet 3.0.

noun

a rational motive for a belief or action

noun.motive

Examples
The reason that war was declared.

Synonyms ground

Source: WordNet 3.0
an explanation of the cause of some phenomenon

noun.communication

Examples
The reason a steady state was never reached was that the back pressure built up too slowly.

Source: WordNet 3.0
the capacity for rational thought or inference or discrimination

noun.cognition

Examples
We are told that man is endowed with reason and capable of distinguishing good from evil.

Synonyms intellect understanding

Source: WordNet 3.0
the state of having good sense and sound judgment

noun.state

Examples
He had to rely less on reason than on rousing their emotions.

Synonyms rationality reasonableness

Source: WordNet 3.0
a justification for something existing or happening

noun.communication

Examples
They had good reason to rejoice.

Synonyms cause grounds

Source: WordNet 3.0
a fact that logically justifies some premise or conclusion

noun.cognition

Examples
There is reason to believe he is lying.

Source: WordNet 3.0
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.

noun

Source: webster1913

decide by reasoning; draw or come to a conclusion

verb.cognition

Examples
We reasoned that it was cheaper to rent than to buy a house.

Synonyms conclude reason out

Source: WordNet 3.0
present reasons and arguments

verb.communication

Synonyms argue

Source: WordNet 3.0
think logically

verb.cognition

Examples
The children must learn to reason.

Source: WordNet 3.0
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.

verb

Source: webster1913
To arrange and present the reasons for or against; to examine or discuss by arguments; to debate or discuss; as, I <i>reasoned</i> the matter with my friend.

verb

Source: webster1913