# Rational vs Responsible - What's the difference?

rational | responsible |

## As adjectives the difference between rational and responsible

is that rational is capable of reasoning while responsible is answerable for an act performed or for its consequences; accountable; amenable, especially legally or politically.

## As a noun rational

is (mathematics) a rational number: a number that can be expressed as the quotient of two integers.

# rational

## English

### Alternative forms

* rationall (obsolete)

### Etymology 1

From (etyl) rationel, rational, from (etyl)

#### Adjective

(en adjective)
• Capable of reasoning.
• *
• Logically sound; not contradictory or otherwise absurd.
• (label) Healthy or balanced intellectually; exhibiting reasonableness.
• *{{quote-magazine, date=2014-06-21, volume=411, issue=8892, magazine=(The Economist)
• , title= Magician’s brain , passage=The [Isaac] Newton that emerges from the [unpublished] manuscripts is far from the popular image of a rational practitioner of cold and pure reason. The architect of modern science was himself not very modern. He was obsessed with alchemy.}}
• Of a number, capable of being expressed as the ratio of two integers.
• ¾ is a rational number, but ?2 is an irrational number.
• Of an algebraic expression, capable of being expressed as the ratio of two polynomials.
• (label) Expressing the type, structure, relations, and reactions of a compound; graphic; said of formulae.
• ##### Antonyms
* (reasonable) absurd, irrational, nonsensical * (capable of reasoning) arational, irrational, non-rational * (number theory) irrational

### Etymology 2

From (etyl) rational, from , for which see the first etymology.

#### Noun

(en noun)
• (mathematics) A rational number: a number that can be expressed as the quotient of two integers.
• The quotient of two rationals''' is again a '''rational .
• A rational being.
• (Young)

* *

*

# responsible

## English

### Adjective

(en adjective)
• Answerable for an act performed or for its consequences; accountable; amenable, especially legally or politically.
• * {{quote-magazine, date=2012-03
• , author=William E. Carter, Merri Sue Carter , title=The British Longitude Act Reconsidered , volume=100, issue=2, page=87 , magazine= citation , passage=But was it responsible governance to pass the Longitude Act without other efforts to protect British seamen? Or might it have been subterfuge—a disingenuous attempt to shift attention away from the realities of their life at sea.}}
Parents are responsible for their child's behaviour.
• Capable of responding to any reasonable claim; able to answer reasonably for one's conduct and obligations; capable of rational conduct.
• Involving responsibility; involving a degree of personal accountability on the part of the person concerned.
• She has a responsible position in the firm.
• Being a primary cause or agent of some event or action; capable of being credited for something, or of being held liable for something.
• Who is responsible for this mess?
• Able to be trusted; reliable; trustworthy.
• He looks like a responsible guy.

#### Antonyms

* irresponsible

* *