interférer

See also: interferer

French

Etymology

Borrowed from English interfere.

Pronunciation

  • IPA(key): /ɛ̃.tɛʁ.fe.ʁe/

Verb

interférer

  1. to interfere

Conjugation

This verb is conjugated like céder. It is a regular -er verb, except that its last stem vowel alternates between /e/ (written ‘é’) and /ɛ/ (written ‘è’), with the latter being used before mute ‘e’. One special case is the future stem, used in the future and the conditional. Before 1990, the future stem of such verbs was written interférer-, reflecting the historic pronunciation /e/. In 1990, the French Academy recommended that it be written interfèrer-, reflecting the now common pronunciation /ɛ/, thereby making this distinction consistent throughout the conjugation (and also matching in this regard the conjugations of verbs like lever and jeter). Both spellings are in use today, and both are therefore given here.

  Conjugation of interférer (see also Appendix:French verbs)
simple compound
infinitive interférer avoir interféré
gerund en interférant en ayant interféré
present participle interférant
/ɛ̃.tɛʁ.fe.ʁɑ̃/
past participle interféré
/ɛ̃.tɛʁ.fe.ʁe/
person singular plural
first second third first second third
indicative je (j’) tu il nous vous ils
simple
tenses		 present interfère
/ɛ̃.tɛʁ.fɛʁ/		 interfères
/ɛ̃.tɛʁ.fɛʁ/		 interfère
/ɛ̃.tɛʁ.fɛʁ/		 interférons
/ɛ̃.tɛʁ.fe.ʁɔ̃/		 interférez
/ɛ̃.tɛʁ.fe.ʁe/		 interfèrent
/ɛ̃.tɛʁ.fɛʁ/
imperfect interférais
/ɛ̃.tɛʁ.fe.ʁɛ/		 interférais
/ɛ̃.tɛʁ.fe.ʁɛ/		 interférait
/ɛ̃.tɛʁ.fe.ʁɛ/		 interférions
/ɛ̃.tɛʁ.fe.ʁjɔ̃/		 interfériez
/ɛ̃.tɛʁ.fe.ʁje/		 interféraient
/ɛ̃.tɛʁ.fe.ʁɛ/
past historic1 interférai
/ɛ̃.tɛʁ.fe.ʁe/		 interféras
/ɛ̃.tɛʁ.fe.ʁa/		 interféra
/ɛ̃.tɛʁ.fe.ʁa/		 interférâmes
/ɛ̃.tɛʁ.fe.ʁam/		 interférâtes
/ɛ̃.tɛʁ.fe.ʁat/		 interférèrent
/ɛ̃.tɛʁ.fe.ʁɛʁ/
future interfèrerai or interférerai
/ɛ̃.tɛʁ.fɛ.ʁə.ʁe/		 interfèreras or interféreras
/ɛ̃.tɛʁ.fɛ.ʁə.ʁa/		 interfèrera or interférera
/ɛ̃.tɛʁ.fɛ.ʁə.ʁa/		 interfèrerons or interférerons
/ɛ̃.tɛʁ.fɛ.ʁə.ʁɔ̃/		 interfèrerez or interférerez
/ɛ̃.tɛʁ.fɛ.ʁə.ʁe/		 interfèreront or interféreront
/ɛ̃.tɛʁ.fɛ.ʁə.ʁɔ̃/
conditional interfèrerais or interférerais
/ɛ̃.tɛʁ.fɛ.ʁə.ʁɛ/		 interfèrerais or interférerais
/ɛ̃.tɛʁ.fɛ.ʁə.ʁɛ/		 interfèrerait or interférerait
/ɛ̃.tɛʁ.fɛ.ʁə.ʁɛ/		 interfèrerions or interférerions
/ɛ̃.tɛʁ.fɛ.ʁə.ʁjɔ̃/		 interfèreriez or interféreriez
/ɛ̃.tɛʁ.fɛ.ʁə.ʁje/		 interfèreraient or interféreraient
/ɛ̃.tɛʁ.fɛ.ʁə.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 interfère
/ɛ̃.tɛʁ.fɛʁ/		 interfères
/ɛ̃.tɛʁ.fɛʁ/		 interfère
/ɛ̃.tɛʁ.fɛʁ/		 interférions
/ɛ̃.tɛʁ.fe.ʁjɔ̃/		 interfériez
/ɛ̃.tɛʁ.fe.ʁje/		 interfèrent
/ɛ̃.tɛʁ.fɛʁ/
imperfect1 interférasse
/ɛ̃.tɛʁ.fe.ʁas/		 interférasses
/ɛ̃.tɛʁ.fe.ʁas/		 interférât
/ɛ̃.tɛʁ.fe.ʁa/		 interférassions
/ɛ̃.tɛʁ.fe.ʁa.sjɔ̃/		 interférassiez
/ɛ̃.tɛʁ.fe.ʁa.sje/		 interférassent
/ɛ̃.tɛʁ.fe.ʁas/
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 –
— interfère
/ɛ̃.tɛʁ.fɛʁ/		 — interférons
/ɛ̃.tɛʁ.fe.ʁɔ̃/		 interférez
/ɛ̃.tɛʁ.fe.ʁe/		 —
1literary tenses

Derived terms

Further reading

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