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Collins Portuguese Dictionary and Grammar
  • An up-to-date European and Brazilian Portuguese dictionary and user-friendly grammar guide. The ‘key word’ features, cultural notes and an easy-to-use grammar section make this the ideal study tool for intermediate learners.
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  • ∙ Brazilian Portuguese with European Portuguese variants and both UK and US English shown.



  1. n

    1. cause razão f

    2. ability to think raciocínio

    3. sense bom-senso

  2. vi

    • to reason with sb — argumentar com alguém; persuadir alguém
    • the reason for/why — a razão de/pela qual
    • to have reason to think — ter motivo para pensar
    • it stands to reason that — é razoável/lógico que
    • she claims with good reason that ... — ela afirma com toda a razão que ...
    • all the more reason why you should not sell it — mais uma razão para você não vendê-lo

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Word forms


Common casereasonreasons
Possessive casereason'sreasons'


Basic forms
Present Participle (Participle I)reasoning
Past Participle (Participle II)reasoned
Present Indefinite, Active Voice
I reasonwe reason
you reasonyou reason
he/she/it reasonsthey reason
Present Continuous, Active Voice
I am reasoningwe are reasoning
you are reasoningyou are reasoning
he/she/it is reasoningthey are reasoning
Present Perfect, Active Voice
I have reasonedwe have reasoned
you have reasonedyou have reasoned
he/she/it has reasonedthey have reasoned
Present Perfect Continuous, Active Voice
I have been reasoningwe have been reasoning
you have been reasoningyou have been reasoning
he/she/it has been reasoningthey have been reasoning
Past Indefinite, Active Voice
I reasonedwe reasoned
you reasonedyou reasoned
he/she/it reasonedthey reasoned
Past Continuous, Active Voice
I was reasoningwe were reasoning
you were reasoningyou were reasoning
he/she/it was reasoningthey were reasoning
Past Perfect, Active Voice
I had reasonedwe had reasoned
you had reasonedyou had reasoned
he/she/it had reasonedthey had reasoned
Past Perfect Continuous, Active Voice
I had been reasoningwe had been reasoning
you had been reasoningyou had been reasoning
he/she/it had been reasoningthey had been reasoning
Future Indefinite, Active Voice
I shall/will reasonwe shall/will reason
you will reasonyou will reason
he/she/it will reasonthey will reason
Future Continuous, Active Voice
I shall/will be reasoningwe shall/will be reasoning
you will be reasoningyou will be reasoning
he/she/it will be reasoningthey will be reasoning
Future Perfect, Active Voice
I shall/will have reasonedwe shall/will have reasoned
you will have reasonedyou will have reasoned
he/she/it will have reasonedthey will have reasoned
Future Perfect Continuous, Active Voice
I shall/will have been reasoningwe shall/will have been reasoning
you will have been reasoningyou will have been reasoning
he/she/it will have been reasoningthey will have been reasoning
Future in the Past Indefinite, Active Voice
I should/would reasonwe should/would reason
you would reasonyou would reason
he/she/it would reasonthey would reason
Future in the Past Continuous, Active Voice
I should/would be reasoningwe should/would be reasoning
you would be reasoningyou would be reasoning
he/she/it would be reasoningthey would be reasoning
Future in the Past Perfect, Active Voice
I should/would have reasonedwe should/would have reasoned
you would have reasonedyou would have reasoned
he/she/it would have reasonedthey would have reasoned
Future in the Past Perfect Continuous, Active Voice
I should/would have been reasoningwe should/would have been reasoning
you would have been reasoningyou would have been reasoning
he/she/it would have been reasoningthey would have been reasoning
Present Indefinite, Passive Voice
I am reasonedwe are reasoned
you are reasonedyou are reasoned
he/she/it is reasonedthey are reasoned
Present Continuous, Passive Voice
I am being reasonedwe are being reasoned
you are being reasonedyou are being reasoned
he/she/it is being reasonedthey are being reasoned
Present Perfect, Passive Voice
I have been reasonedwe have been reasoned
you have been reasonedyou have been reasoned
he/she/it has been reasonedthey have been reasoned
Past Indefinite, Passive Voice
I was reasonedwe were reasoned
you were reasonedyou were reasoned
he/she/it was reasonedthey were reasoned
Past Continuous, Passive Voice
I was being reasonedwe were being reasoned
you were being reasonedyou were being reasoned
he/she/it was being reasonedthey were being reasoned
Past Perfect, Passive Voice
I had been reasonedwe had been reasoned
you had been reasonedyou had been reasoned
he/she/it had been reasonedthey had been reasoned
Future Indefinite, Passive Voice
I shall/will be reasonedwe shall/will be reasoned
you will be reasonedyou will be reasoned
he/she/it will be reasonedthey will be reasoned
Future Perfect, Passive Voice
I shall/will have been reasonedwe shall/will have been reasoned
you will have been reasonedyou will have been reasoned
he/she/it will have been reasonedthey will have been reasoned