Inherited from Old French , borrowed from Latin convincere, and adapted to the form of vaincre.
convaincre
This verb is conjugated like vaincre. That means it is conjugated like vendre, except that its usual stem convainqu- becomes convainc- when either there is no ending, or the ending starts with -u- or a written consonant. Additionally, when inverted the third person singular in the present adds the infix -t-: convainc-t-il? These are strictly spelling changes; pronunciation-wise, the verb is conjugated exactly like vendre.
infinitive | simple | convaincre | |||||
---|---|---|---|---|---|---|---|
compound | avoir + past participle | ||||||
present participle or gerund1 | simple | convainquant /kɔ̃.vɛ̃.kɑ̃/ | |||||
compound | ayant + past participle | ||||||
past participle | convaincu /kɔ̃.vɛ̃.ky/ | ||||||
singular | plural | ||||||
first | second | third | first | second | third | ||
indicative | je (j’) | tu | il, elle, on | nous | vous | ils, elles | |
(simple tenses) |
present | convaincs /kɔ̃.vɛ̃/ |
convaincs /kɔ̃.vɛ̃/ |
convainc /kɔ̃.vɛ̃/ |
convainquons /kɔ̃.vɛ̃.kɔ̃/ |
convainquez /kɔ̃.vɛ̃.ke/ |
convainquent /kɔ̃.vɛ̃k/ |
imperfect | convainquais /kɔ̃.vɛ̃.kɛ/ |
convainquais /kɔ̃.vɛ̃.kɛ/ |
convainquait /kɔ̃.vɛ̃.kɛ/ |
convainquions /kɔ̃.vɛ̃.kjɔ̃/ |
convainquiez /kɔ̃.vɛ̃.kje/ |
convainquaient /kɔ̃.vɛ̃.kɛ/ | |
past historic2 | convainquis /kɔ̃.vɛ̃.ki/ |
convainquis /kɔ̃.vɛ̃.ki/ |
convainquit /kɔ̃.vɛ̃.ki/ |
convainquîmes /kɔ̃.vɛ̃.kim/ |
convainquîtes /kɔ̃.vɛ̃.kit/ |
convainquirent /kɔ̃.vɛ̃.kiʁ/ | |
future | convaincrai /kɔ̃.vɛ̃.kʁe/ |
convaincras /kɔ̃.vɛ̃.kʁa/ |
convaincra /kɔ̃.vɛ̃.kʁa/ |
convaincrons /kɔ̃.vɛ̃.kʁɔ̃/ |
convaincrez /kɔ̃.vɛ̃.kʁe/ |
convaincront /kɔ̃.vɛ̃.kʁɔ̃/ | |
conditional | convaincrais /kɔ̃.vɛ̃.kʁɛ/ |
convaincrais /kɔ̃.vɛ̃.kʁɛ/ |
convaincrait /kɔ̃.vɛ̃.kʁɛ/ |
convaincrions /kɔ̃.vɛ̃.kʁi.jɔ̃/ |
convaincriez /kɔ̃.vɛ̃.kʁi.je/ |
convaincraient /kɔ̃.vɛ̃.kʁɛ/ | |
(compound tenses) |
present perfect | present indicative of avoir + past participle | |||||
pluperfect | imperfect indicative of avoir + past participle | ||||||
past anterior2 | past historic of avoir + past participle | ||||||
future perfect | future of avoir + past participle | ||||||
conditional perfect | conditional of avoir + past participle | ||||||
subjunctive | que je (j’) | que tu | qu’il, qu’elle | que nous | que vous | qu’ils, qu’elles | |
(simple tenses) |
present | convainque /kɔ̃.vɛ̃k/ |
convainques /kɔ̃.vɛ̃k/ |
convainque /kɔ̃.vɛ̃k/ |
convainquions /kɔ̃.vɛ̃.kjɔ̃/ |
convainquiez /kɔ̃.vɛ̃.kje/ |
convainquent /kɔ̃.vɛ̃k/ |
imperfect2 | convainquisse /kɔ̃.vɛ̃.kis/ |
convainquisses /kɔ̃.vɛ̃.kis/ |
convainquît /kɔ̃.vɛ̃.ki/ |
convainquissions /kɔ̃.vɛ̃.ki.sjɔ̃/ |
convainquissiez /kɔ̃.vɛ̃.ki.sje/ |
convainquissent /kɔ̃.vɛ̃.kis/ | |
(compound tenses) |
past | present subjunctive of avoir + past participle | |||||
pluperfect2 | imperfect subjunctive of avoir + past participle | ||||||
imperative | – | – | – | ||||
simple | — | convaincs /kɔ̃.vɛ̃/ |
— | convainquons /kɔ̃.vɛ̃.kɔ̃/ |
convainquez /kɔ̃.vɛ̃.ke/ |
— | |
compound | — | simple imperative of avoir + past participle | — | simple imperative of avoir + past participle | simple imperative of avoir + past participle | — | |
1 The French gerund is usable only with the preposition en. | |||||||
2 In less formal writing or speech, these tenses may be found to have been replaced in the following way:
(Christopher Kendris , Master the Basics: French, pp. 77, 78, 79, 81). |