Subjonctif Plus-que-parfait (Subjunctive Pluperfect) Tense Conjugation of the French Verb déraisonner

ByMichael Burns

Introduction to the verb déraisonner

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The English translation of the French verb déraisonner is “to be unreasonable” or “to lose one’s mind.” It is pronounced as “day-ray-zoh-nay.”

Déraisonner is derived from the Old French word “deraisoner,” which comes from the Latin word “derationare” meaning “to deprive of reason.” It is most often used in everyday French in the Subjonctif Plus-que-parfait tense, which is used to express actions or events that could have happened in the past, but did not.

Three simple examples of its usage in the Subjonctif Plus-que-parfait tense are:

  1. Il aurait fallu que tu ne déraisonnasses pas en public. (You should not have been unreasonable in public.)
  2. J’aurais aimé qu’elle ne déraisonnât pas lors de la réunion. (I wish she had not lost her mind during the meeting.)
  3. Il était dommage que nous déraisonnions en ces temps difficiles. (It was unfortunate that we were being unreasonable during these difficult times.)

Table of the Subjonctif Plus-que-parfait (Subjunctive Pluperfect) Tense Conjugation of déraisonner

Pronoun Conjugation Example Usage English Translation
je eusse déraisonné Je doute que j’eusse déraisonné jusqu’à ce point. I doubt I would have lost my mind to that extent.
tu eusses déraisonné Je doute que tu eusses déraisonné jusqu’à ce point. I doubt you would have lost your mind to that extent.
il eût déraisonné Je doute qu’il eût déraisonné jusqu’à ce point. I doubt he would have lost his mind to that extent.
elle eût déraisonné Je doute qu’elle eût déraisonné jusqu’à ce point. I doubt she would have lost her mind to that extent.
on eût déraisonné Je doute qu’on eût déraisonné jusqu’à ce point. I doubt one would have lost their mind to that extent.
nous eussions déraisonné Je doute que nous eussions déraisonné jusqu’à ce point. I doubt we would have lost our minds to that extent.
vous eussiez déraisonné Je doute que vous eussiez déraisonné jusqu’à ce point. I doubt you would have lost your minds to that extent.
ils eussent déraisonné Je doute qu’ils eussent déraisonné jusqu’à ce point. I doubt they would have lost their minds to that extent.
elles eussent déraisonné Je doute qu’elles eussent déraisonné jusqu’à ce point. I doubt they would have lost their minds to that extent.

Other Conjugations for Déraisonner.

   
    Le Present (Present Tense) Conjugation of the French Verb déraisonner
   

    Imparfait (Imperfect) Tense Conjugation of the French Verb déraisonner
   

    Passé Simple (Simple Past) Tense Conjugation of the French Verb déraisonner
   

    Passé Composé (Present Perfect) Tense Conjugation of the French Verb déraisonner
   

    Futur Simple (Simple Future) Tense Conjugation of the French Verb déraisonner
   

    Futur Proche (Near Future) Tense Conjugation of the French Verb déraisonner
   

    Plus-que-parfait (Pluperfect) Tense Conjugation of the French Verb déraisonner
   

    Passé Antérieur (Past Anterior) Tense Conjugation of the French Verb déraisonner

    Futur Antérieur (Future Anterior) Tense Conjugation of the French Verb déraisonner

    Subjonctif Présent (Subjunctive Present) Tense Conjugation of the French Verb déraisonner

    Subjonctif Passé (Subjunctive Past) Tense Conjugation of the French Verb déraisonner
   

    Subjonctif Imparfait (Subjunctive Imperfect) Tense Conjugation of the French Verb déraisonner

    Subjonctif Plus-que-parfait (Subjunctive Pluperfect) Tense Conjugation of the French Verb déraisonner
   

    Conditionnel Présent (Conditional Present) Tense Conjugation of the French Verb déraisonner
   

    Conditionnel Passé (Conditional Past) Tense Conjugation of the French Verb déraisonner

    L’impératif Présent (Imperative Present) Tense Conjugation of the French Verb déraisonner

    L’infinitif Présent (Infinitive Present) Tense Conjugation of the French Verb déraisonner
    (this article)

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Déraisonner – About the French Subjonctif Plus-que-parfait (Subjunctive Pluperfect) Tense

The French Subjonctif Plus-que-parfait, also known as the Pluperfect Subjunctive, is a verb tense used to express actions or states that occurred before another action in the past, and it’s used in situations where the indicative mood is in the past subjunctive or conditional mood.
NOTE: To take a deep dive into all the French tenses then see my article on Mastering French Tense Conjugation.

Formation

To form the Subjonctif Plus-que-parfait, you start with the imperfect subjunctive form of the auxiliary verb “avoir” or “être,” followed by the past participle of the main verb. 
For “avoir” verbs: Take the imperfect subjunctive form of “avoir” (e.g., j’eusse, tu eusses, il/elle eût, nous eussions, vous eussiez, ils/elles eussent). Add the past participle of the main verb. 
For “être” verbs: Take the imperfect subjunctive form of “être” (e.g., je fusse, tu fusses, il/elle fût, nous fussions, vous fussiez, ils/elles fussent). Add the past participle of the main verb.

Common Everyday Usage Patterns

Hypothetical Situations

The Subjonctif Plus-que-parfait is often used to express hypothetical or unreal actions that occurred before another past action.
For example: J’aurais aimé que tu aies fini ton travail avant que je sois arrivé. (I would have liked for you to have finished your work before I arrived.) 

Reported Speech

In reported speech, you may use the Subjonctif Plus-que-parfait to convey what someone said or thought in the past. 
For example: Il m’a dit qu’il avait peur que je n’aie pas compris. (He told me that he was afraid that I hadn’t understood.) 

Doubt, Wishes, and Emotions

This tense can also be used to express doubt, wishes, and emotions about past actions. 
For example: Je doutais qu’il eût dit la vérité. (I doubted that he had told the truth.) 
J’aurais souhaité que tu fusses venu. (I would have wished for you to have come.)

Interactions with Other Tenses

Present Subjunctive

The Subjonctif Plus-que-parfait can be used to describe past actions when the main verb is in the present subjunctive. 
For example: “Il faut que j’aie fini mon travail avant que tu partes.” (I must have finished my work before you leave.) 

Imperfect Subjunctive

It’s common to use the Subjonctif Plus-que-parfait with the imperfect subjunctive in complex sentences. 
For example: “Il m’avait dit qu’il fût rentré avant la fin de la journée.” (He had told me that he had returned before the end of the day.) 

Conditional

When the main verb is in the conditional mood, the Subjonctif Plus-que-parfait can be used to express past unreal conditions. 
For example: “Si j’avais su, j’aurais voulu que tu aies réussi.” (If I had known, I would have wanted you to have succeeded.)

Summary

The Subjonctif Plus-que-parfait is a complex tense used to convey nuanced meanings in French. While its usage may seem intricate, it becomes more intuitive with practice and exposure to the language. It’s important to understand the context in which it’s used, as it often conveys subtleties of time, conditionality, and emotion in French sentences.

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