Rational vs Reasonable

Quando usar cada um em inglês, com significado, registro e exemplos.

Rational

Top 2000 (comum)C1adjective

Reasonable

Top 2000 (comum)B2adjective
 RationalReasonable
Pronúncia🇬🇧 /["/ˈræʃnəl/"]/🇺🇸 /["/ˈræʃnəl/"]/🇬🇧 /["/ˈriːznəbl/"]/🇺🇸 /["/ˈriːznəbl/"]/
SignificadoBased on reason and logic.Fair and sensible; not extreme.
ExemploShe gave a rational explanation for her decision.It is reasonable to assume that the meeting will start on time.
RegistroNeutroNeutro
Quão comumTop 2000 (comum)Top 2000 (comum)
Nível CEFRC1B2
Classe gramaticaladjectiveadjective
Colocaçõesbe, seem, highly, very, completely, about, be, seem, highly, very, completely, aboutappear, be, look, extremely, fairly, very, appear, be, look, extremely, fairly, very, appear, be, look, extremely, fairly, very
Antônimosirrational, illogical, unreasonableunreasonable, irrational, excessive
Erros comuns'Rational' is often confused with 'rationale', which means the reason for something., Some learners might use 'rational' to refer to emotions instead of logic., Incorrectly saying 'more rational' when 'more rational than' is needed for comparison.Confused with 'rational' which is more about logic than fairness., Using 'reasonable' to describe an extreme opinion or action., Incorrectly spelling it as 'resonable'.
Notas de usoUse 'rational' when describing thoughts or actions based on logic rather than emotions. It is appropriate in both formal and casual contexts, but may sound too technical in a relaxed conversation.Typically used to describe actions, opinions, or decisions that are logical. Avoid in overly emotional contexts or when discussing extreme views.

Perguntas frequentes: Rational vs Reasonable

Qual é a diferença entre Rational e Reasonable?

Rational: Based on reason and logic. Reasonable: Fair and sensible; not extreme.

Qual é mais avançada: Rational e Reasonable?

Rational é o nível mais alto, em C1, na escala CEFR.

Rational e Reasonable estão no mesmo nível CEFR?

Rational: C1, Reasonable: B2 na escala CEFR.

Que classe gramatical são Rational e Reasonable?

Rational: adjective, Reasonable: adjective.

Pode mostrar um exemplo de cada?

Rational: She gave a rational explanation for her decision. Reasonable: It is reasonable to assume that the meeting will start on time.

Posso usar Rational e Reasonable de forma intercambiável?

Nem sempre. Rational e Reasonable são relacionadas e às vezes se sobrepõem, mas diferem em registro, frequência e uso, então trocar uma pela outra pode mudar o sentido ou o tom. Veja as diferenças acima antes de substituir.