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Definition 2025
demonstrer
demonstrer
French
Verb
demonstrer
- Archaic spelling of démontrer.
 
Conjugation
  Conjugation of demonstrer (see also Appendix:French verbs)
| simple | compound | ||||||
|---|---|---|---|---|---|---|---|
| infinitive | demonstrer | avoir demonstré | |||||
| gerund | en demonstrant | en ayant demonstré | |||||
| present participle |  demonstrant /də.mɔ̃s.tʁɑ̃/  | 
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| past participle |  demonstré /də.mɔ̃s.tʁe/  | 
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| person | singular | plural | |||||
| first | second | third | first | second | third | ||
| indicative | je (j’) | tu | il | nous | vous | ils | |
|  simple tenses  | 
present |  demonstre /də.mɔ̃stʁ/  | 
 demonstres /də.mɔ̃stʁ/  | 
 demonstre /də.mɔ̃stʁ/  | 
 demonstrons /də.mɔ̃s.tʁɔ̃/  | 
 demonstrez /də.mɔ̃s.tʁe/  | 
 demonstrent /də.mɔ̃stʁ/  | 
| imperfect |  demonstrais /də.mɔ̃s.tʁɛ/  | 
 demonstrais /də.mɔ̃s.tʁɛ/  | 
 demonstrait /də.mɔ̃s.tʁɛ/  | 
 demonstrions /də.mɔ̃s.tʁi.jɔ̃/  | 
 demonstriez /də.mɔ̃s.tʁi.je/  | 
 demonstraient /də.mɔ̃s.tʁɛ/  | 
|
| past historic1 |  demonstrai /də.mɔ̃s.tʁe/  | 
demonstras /də.mɔ̃s.tʁa/  | 
demonstra /də.mɔ̃s.tʁa/  | 
demonstrâmes /də.mɔ̃s.tʁam/  | 
demonstrâtes /də.mɔ̃s.tʁat/  | 
demonstrèrent /də.mɔ̃s.tʁɛʁ/  | 
|
| future |  demonstrerai /də.mɔ̃s.tʁə.ʁe/  | 
 demonstreras /də.mɔ̃s.tʁə.ʁa/  | 
 demonstrera /də.mɔ̃s.tʁə.ʁa/  | 
 demonstrerons /də.mɔ̃s.tʁə.ʁɔ̃/  | 
 demonstrerez /də.mɔ̃s.tʁə.ʁe/  | 
 demonstreront /də.mɔ̃s.tʁə.ʁɔ̃/  | 
|
| conditional |  demonstrerais /də.mɔ̃s.tʁə.ʁɛ/  | 
 demonstrerais /də.mɔ̃s.tʁə.ʁɛ/  | 
 demonstrerait /də.mɔ̃s.tʁə.ʁɛ/  | 
 demonstrerions /də.mɔ̃s.tʁə.ʁjɔ̃/  | 
 demonstreriez /də.mɔ̃s.tʁə.ʁje/  | 
 demonstreraient /də.mɔ̃s.tʁə.ʁɛ/  | 
|
|  compound tenses  | 
present perfect | Use the present tense of avoir followed by the past participle | |||||
| pluperfect | Use the imperfect tense of avoir followed by the past participle | ||||||
| past anterior1 | Use the past historic tense of avoir followed by the past participle | ||||||
| future perfect | Use the future tense of avoir followed by the past participle | ||||||
| conditional perfect | Use the conditional tense of avoir followed by the past participle | ||||||
| subjunctive | que je (j’) | que tu | qu’il | que nous | que vous | qu’ils | |
|  simple tenses  | 
present |  demonstre /də.mɔ̃stʁ/  | 
 demonstres /də.mɔ̃stʁ/  | 
 demonstre /də.mɔ̃stʁ/  | 
 demonstrions /də.mɔ̃s.tʁi.jɔ̃/  | 
 demonstriez /də.mɔ̃s.tʁi.je/  | 
 demonstrent /də.mɔ̃stʁ/  | 
| imperfect1 | 
demonstrasse /də.mɔ̃s.tʁas/  | 
demonstrasses /də.mɔ̃s.tʁas/  | 
demonstrât /də.mɔ̃s.tʁa/  | 
demonstrassions /də.mɔ̃s.tʁa.sjɔ̃/  | 
demonstrassiez /də.mɔ̃s.tʁa.sje/  | 
demonstrassent /də.mɔ̃s.tʁas/  | 
|
|  compound tenses  | 
past | Use the present subjunctive tense of avoir followed by the past participle | |||||
| pluperfect1 | Use the imperfect subjunctive tense of avoir followed by the past participle | ||||||
| imperative | – | tu | – | nous | vous | – | |
| — |  demonstre /də.mɔ̃stʁ/  | 
— |  demonstrons /də.mɔ̃s.tʁɔ̃/  | 
 demonstrez /də.mɔ̃s.tʁe/  | 
— | ||
| 1literary tenses | |||||||
Latin
Verb
dēmōnstrer
- first-person singular present passive subjunctive of dēmōnstrō "may I be shown; may I be proven"
 
Middle French
Etymology
Verb
demonstrer
- to demonstrate
 
Conjugation
- Middle French conjugation varies from one text to another. Hence, the following conjugation should be considered as typical, not as exhaustive.
 
   Conjugation of demonstrer
 
| simple | compound | ||||||
|---|---|---|---|---|---|---|---|
| infinitive | demonstrer | avoir demonstré | |||||
| gerund | en demonstrant | Use the gerund of avoir followed by the past participle | |||||
| present participle | demonstrant | ||||||
| past participle | demonstré | ||||||
| person | singular | plural | |||||
| first | second | third | first | second | third | ||
| indicative | ie (may be i' before a vowel) | tu | il | nous | vous | ilz, elles | |
|  simple tenses  | 
present | demonstre | demonstres | demonstre | demonstrons | demonstrez | demonstrent | 
| imperfect | demonstrois, demonstroys | demonstrois, demonstroys | demonstroit, demonstroyt | demonstrions, demonstryons | demonstriez, demonstryez | demonstroient, demonstroyent | |
| past historic | demonstra | demonstras | demonstra | demonstrasmes | demonstrastes | demonstrerent | |
| future | demonstrerai, demonstreray | demonstreras | demonstrera | demonstrerons | demonstrerez | demonstreront | |
| conditional | demonstrerois, demonstreroys | demonstrerois, demonstreroys | demonstreroit, demonstreroyt | demonstrerions, demonstreryons | demonstreriez, demonstreryez | demonstreroient, demonstreroyent | |
|  compound tenses  | 
present perfect | Use the present tense of avoir followed by the past participle | |||||
| pluperfect | Use the imperfect tense of avoir followed by the past participle | ||||||
| past anterior | Use the past historic tense of avoir followed by the past participle | ||||||
| future perfect | Use the future tense of avoir followed by the past participle | ||||||
| conditional perfect | Use the conditional tense of avoir followed by the past participle | ||||||
| subjunctive | que ie | que tu | qu'il | que nous | que vous | qu'ilz, qu'elles | |
|  simple tenses  | 
present | demonstre | demonstres | demonstre | demonstrons | demonstrez | demonstrent | 
| imperfect | demonstrasse | demonstrasses | demonstrast | demonstrassions | demonstrassiez | demonstrassent | |
|  compound tenses  | 
past | Use the present subjunctive of avoir followed by the past participle | |||||
| pluperfect | Use the imperfect subjunctive of avoir followed by the past participle | ||||||
| imperative | – | tu | – | nous | vous | – | |
| — | demonstre | — | demonstrons | demonstrez | — | ||
Old French
Verb
demonstrer
- Alternative form of demoustrer
 
Conjugation
This verb conjugates as a first-group verb ending in -er. In the present tense an extra supporting e is needed in the first-person singular indicative and throughout the singular subjunctive, and the third-person singular subjunctive ending -t is lost. Old French conjugation varies significantly by date and by region. The following conjugation should be treated as a guide.
    Conjugation of demonstrer (see also Appendix:Old French verbs)
| simple | compound | ||||||
|---|---|---|---|---|---|---|---|
| infinitive | demonstrer | avoir demonstré | |||||
| gerund | en demonstrant | Use the gerund of avoir followed by the past participle | |||||
| present participle | demonstrant | ||||||
| past participle | demonstré | ||||||
| person | singular | plural | |||||
| first | second | third | first | second | third | ||
| indicative | jo | tu | il | nos | vos | il | |
|  simple tenses  | 
present | demonstre | demonstres | demonstre | demonstrons | demonstrez | demonstrent | 
| imperfect | demonstroie, demonstreie, demonstroe, demonstreve | demonstroies, demonstreies, demonstroes, demonstreves | demonstroit, demonstreit, demonstrot, demonstreve | demonstriiens, demonstriens | demonstriiez, demonstriez | demonstroient, demonstreient, demonstroent, demonstrevent | |
| preterite | demonstrai | demonstras | demonstra | demonstrames | demonstrastes | demonstrerent | |
| future | demonstrerai | demonstreras | demonstrera | demonstrerons | demonstreroiz, demonstrereiz, demonstrerez | demonstreront | |
| conditional | demonstreroie, demonstrereie | demonstreroies, demonstrereies | demonstreroit, demonstrereit | demonstreriiens, demonstreriens | demonstreriiez, demonstreriez | demonstreroient, demonstrereient | |
|  compound tenses  | 
present perfect | Use the present tense of avoir followed by the past participle | |||||
| pluperfect | Use the imperfect tense of avoir followed by the past participle | ||||||
| past anterior | Use the preterite tense of avoir followed by the past participle | ||||||
| future perfect | Use the future tense of avoir followed by the past participle | ||||||
| conditional perfect | Use the conditional tense of avoir followed by the past participle | ||||||
| subjunctive | que jo | que tu | qu’il | que nos | que vos | qu’il | |
|  simple tenses  | 
present | demonstre | demonstres | demonstre | demonstrons | demonstrez | demonstrent | 
| imperfect | demonstrasse | demonstrasses | demonstrast | demonstrissons, demonstrissiens | demonstrissoiz, demonstrissez, demonstrissiez | demonstrassent | |
|  compound tenses  | 
past | Use the present subjunctive of avoir followed by the past participle | |||||
| pluperfect | Use the imperfect subjunctive of avoir followed by the past participle | ||||||
| imperative | – | tu | – | nos | vos | – | |
| — | demonstre | — | demonstrons | demonstrez | — | ||