Liaison and enchaînement: how French words glue together
Spoken French does not pause between words. Inside a phrase, words run together into one stream. Two mechanisms make this happen.
1. Enchaînement (linking a pronounced consonant)
If a word already ends in a pronounced consonant, that consonant slides over to the next word when it starts with a vowel:
- elle arrive /ɛ.la.ʁiv/ (sounds like e-la-rive)
- il est /i.lɛ/
- une idée /y.ni.de/
German does the opposite: it puts a little glottal stop before vowels (ver|eisen, die | Uhr). In French, never do that glottal stop. Think of English an apple said fast: a-napple.
2. Liaison (waking up a silent consonant)
Many final consonants are normally silent: les /le/, vous /vu/, un /œ̃/. Before a vowel or mute h, they come back to life and link to the next word:
| Written | Spoken | Linking sound |
|---|---|---|
| les amis | /le.za.mi/ | s → /z/ |
| vous avez | /vu.za.ve/ | s → /z/ |
| un hôtel | /œ̃.no.tɛl/ | n → /n/ |
| deux enfants | /dø.zɑ̃.fɑ̃/ | x → /z/ |
| petit ami | /pə.ti.ta.mi/ | t → /t/ |
| grand homme | /ɡʁɑ̃.tɔm/ | d → /t/ |
Rule of thumb: written s, x, z link as /z/, d links as /t/, n stays /n/.
Required liaison (always do it)
- article or number + noun/adjective: les enfants, des idées, trois ans
- pronoun + verb: nous avons, ils ont, on est
- short adjective before a noun: petit enfant, gros arbre
- after very short words: très important, en Italie, chez eux
Forbidden liaison (never do it)
- after et: un homme et | une femme (the t of et is always silent)
- after a singular noun: un étudiant | anglais
- before h aspiré (an h that acts like a consonant): les | héros, en | haut
- after question words like comment (except comment allez-vous) and quand in questions: quand | est-ce que
Optional liaison
After verbs and longer words: je suis | allé or je suis_allé. Formal speech (news, speeches) uses more liaisons; casual speech fewer. When in doubt, skip the optional ones.
Trap: ils ont /il.zɔ̃/ (they have) vs ils sont /il.sɔ̃/ (they are). The liaison /z/ is the only difference. Listen for it!