interpénétrer

French

Etymology

From inter- +‎ pénétrer.

Pronunciation

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Verb

interpénétrer

1. to interpenetrate

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 interpénétrer-, reflecting the historic pronunciation /e/. In 1990, the French Academy recommended that it be written interpénètrer-, 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 interpénétrer (see also Appendix:French verbs)

infinitive	simple	interpénétrer
	compound	avoir + past participle
present participle or gerund1	simple	interpénétrant /ɛ̃.tɛʁ.pe.ne.tʁɑ̃/
	compound	ayant + past participle
past participle		interpénétré /ɛ̃.tɛʁ.pe.ne.tʁe/
		singular			plural
		first	second	third	first	second	third
indicative		je (j’)	tu	il, elle, on	nous	vous	ils, elles
(simple tenses)	present	interpénètre /ɛ̃.tɛʁ.pe.nɛtʁ/	interpénètres /ɛ̃.tɛʁ.pe.nɛtʁ/	interpénètre /ɛ̃.tɛʁ.pe.nɛtʁ/	interpénétrons /ɛ̃.tɛʁ.pe.ne.tʁɔ̃/	interpénétrez /ɛ̃.tɛʁ.pe.ne.tʁe/	interpénètrent /ɛ̃.tɛʁ.pe.nɛtʁ/
	imperfect	interpénétrais /ɛ̃.tɛʁ.pe.ne.tʁɛ/	interpénétrais /ɛ̃.tɛʁ.pe.ne.tʁɛ/	interpénétrait /ɛ̃.tɛʁ.pe.ne.tʁɛ/	interpénétrions /ɛ̃.tɛʁ.pe.ne.tʁi.jɔ̃/	interpénétriez /ɛ̃.tɛʁ.pe.ne.tʁi.je/	interpénétraient /ɛ̃.tɛʁ.pe.ne.tʁɛ/
	past historic2	interpénétrai /ɛ̃.tɛʁ.pe.ne.tʁe/	interpénétras /ɛ̃.tɛʁ.pe.ne.tʁa/	interpénétra /ɛ̃.tɛʁ.pe.ne.tʁa/	interpénétrâmes /ɛ̃.tɛʁ.pe.ne.tʁam/	interpénétrâtes /ɛ̃.tɛʁ.pe.ne.tʁat/	interpénétrèrent /ɛ̃.tɛʁ.pe.ne.tʁɛʁ/
	future	interpénètrerai or interpénétrerai /ɛ̃.tɛʁ.pe.nɛ.tʁə.ʁe/ or /ɛ̃.tɛʁ.pe.ne.tʁə.ʁe/	interpénètreras or interpénétreras /ɛ̃.tɛʁ.pe.nɛ.tʁə.ʁa/ or /ɛ̃.tɛʁ.pe.ne.tʁə.ʁa/	interpénètrera or interpénétrera /ɛ̃.tɛʁ.pe.nɛ.tʁə.ʁa/ or /ɛ̃.tɛʁ.pe.ne.tʁə.ʁa/	interpénètrerons or interpénétrerons /ɛ̃.tɛʁ.pe.nɛ.tʁə.ʁɔ̃/ or /ɛ̃.tɛʁ.pe.ne.tʁə.ʁɔ̃/	interpénètrerez or interpénétrerez /ɛ̃.tɛʁ.pe.nɛ.tʁə.ʁe/ or /ɛ̃.tɛʁ.pe.ne.tʁə.ʁe/	interpénètreront or interpénétreront /ɛ̃.tɛʁ.pe.nɛ.tʁə.ʁɔ̃/ or /ɛ̃.tɛʁ.pe.ne.tʁə.ʁɔ̃/
	conditional	interpénètrerais or interpénétrerais /ɛ̃.tɛʁ.pe.nɛ.tʁə.ʁɛ/ or /ɛ̃.tɛʁ.pe.ne.tʁə.ʁɛ/	interpénètrerais or interpénétrerais /ɛ̃.tɛʁ.pe.nɛ.tʁə.ʁɛ/ or /ɛ̃.tɛʁ.pe.ne.tʁə.ʁɛ/	interpénètrerait or interpénétrerait /ɛ̃.tɛʁ.pe.nɛ.tʁə.ʁɛ/ or /ɛ̃.tɛʁ.pe.ne.tʁə.ʁɛ/	interpénètrerions or interpénétrerions /ɛ̃.tɛʁ.pe.nɛ.tʁə.ʁjɔ̃/ or /ɛ̃.tɛʁ.pe.ne.tʁə.ʁjɔ̃/	interpénètreriez or interpénétreriez /ɛ̃.tɛʁ.pe.nɛ.tʁə.ʁje/ or /ɛ̃.tɛʁ.pe.ne.tʁə.ʁje/	interpénètreraient or interpénétreraient /ɛ̃.tɛʁ.pe.nɛ.tʁə.ʁɛ/ or /ɛ̃.tɛʁ.pe.ne.tʁə.ʁɛ/
(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	interpénètre /ɛ̃.tɛʁ.pe.nɛtʁ/	interpénètres /ɛ̃.tɛʁ.pe.nɛtʁ/	interpénètre /ɛ̃.tɛʁ.pe.nɛtʁ/	interpénétrions /ɛ̃.tɛʁ.pe.ne.tʁi.jɔ̃/	interpénétriez /ɛ̃.tɛʁ.pe.ne.tʁi.je/	interpénètrent /ɛ̃.tɛʁ.pe.nɛtʁ/
	imperfect2	interpénétrasse /ɛ̃.tɛʁ.pe.ne.tʁas/	interpénétrasses /ɛ̃.tɛʁ.pe.ne.tʁas/	interpénétrât /ɛ̃.tɛʁ.pe.ne.tʁa/	interpénétrassions /ɛ̃.tɛʁ.pe.ne.tʁa.sjɔ̃/	interpénétrassiez /ɛ̃.tɛʁ.pe.ne.tʁa.sje/	interpénétrassent /ɛ̃.tɛʁ.pe.ne.tʁas/
(compound tenses)	past	present subjunctive of avoir + past participle
	pluperfect2	imperfect subjunctive of avoir + past participle
imperative		–	tu	–	nous	vous	–
simple		—	interpénètre /ɛ̃.tɛʁ.pe.nɛtʁ/	—	interpénétrons /ɛ̃.tɛʁ.pe.ne.tʁɔ̃/	interpénétrez /ɛ̃.tɛʁ.pe.ne.tʁe/	—
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: past historic → present perfect past anterior → pluperfect imperfect subjunctive → present subjunctive pluperfect subjunctive → past subjunctive (Christopher Kendris [1995], Master the Basics: French, pp. 77, 78, 79, 81).