Liaison & enchaînement — how French glues words together

When you listen to spoken French and can’t tell where one word ends and the next begins — this is why. French doesn’t pronounce words as discrete units. It runs them together at the syllable level, with two related but distinct mechanisms:

• Enchaînement: a final pronounced consonant joins onto the next word’s initial vowel. Il a → i-la.
• Liaison: a normally-silent final consonant gets resurrected and joins onto the next word’s initial vowel. les amis → lay-zah-mee.

For Hindi and English speakers, both feel unnatural at first (Hindi and English both pause between words). Mastering this is the single biggest jump in listening comprehension you can make — and it’s what makes your own speech start sounding like French instead of “French words in English rhythm.”

The core trick

French is syllable-timed at the phrase level, not the word level. You re-syllabify across word boundaries to keep CV (consonant-vowel) patterns flowing.

• un ami is not “uhn — ami.” It is u-na-mi, a 3-syllable run with no audible break.
• les amis is not “lay — amis.” It is lay-za-mee, again 3 syllables, no break.

The word boundary is invisible to the ear. This is the single biggest reason listening comprehension is hard early on: you’re hunting for word boundaries that don’t exist acoustically.

Enchaînement (the easy one)

When a word ends in a pronounced consonant and the next word starts with a vowel, the consonant moves over to the next syllable. No new sound appears — just re-syllabification.

Enchaînement happens automatically and always between a pronounced final consonant and a following vowel. It’s not optional, not stylistic — it’s just how the language flows. You don’t have to do anything special; if you simply don’t pause between words, enchaînement happens by physics.

Liaison (the hard one)

A normally-silent final consonant gets pronounced when the next word starts with a vowel sound. The classic example: the s in les is silent (les alone = /le/), but in les amis it surfaces as /z/ and links to the next syllable: /le-za-mi/.

Three things to know:

1. Which consonants liaison-link. Mostly s, x, z (→ /z/), t, d (→ /t/), n (→ /n/), r (→ /ʁ/). The letter s and x always come out as /z/ in liaison (voiced), even though they’re written as voiceless.
2. Which word-pairs trigger it. Three categories: obligatory, optional, forbidden. See below.
3. What “vowel sound” means. Includes words starting with h muet (silent h) but not words starting with h aspiré (see h-muet-aspire.md).

Liaison consonant table

Two surprises worth burning in:

• Final d becomes t in liaison. grand homme = /gʁɑ̃tɔm/, not /gʁɑ̃dɔm/. quand il arrive = /kɑ̃tilaʁiv/.
• Final f in neuf becomes v before heures and ans (only those two words). neuf heures = /nœvœʁ/. Anywhere else, the f stays /f/.

Obligatory liaison (always pronounce it)

Heuristic: if the two words form a tight grammatical unit (determiner+noun, pronoun+verb, adjective+noun, preposition+complement), liaison is obligatory.

Forbidden liaison (never pronounce it)

Two killers to internalize early:

1. et never liaises. “Pierre et Anne” = /pjɛʁ e an/, not /pjɛʁ et an/. The t in et is permanently dead.
2. h aspiré blocks. les héros = /le eʁo/, not /le zeʁo/. les haricots = /le aʁiko/. See h-muet-aspire.md for the word list.

Optional liaison (do it for formal speech, drop it for casual)

Default for the TCF: lean more liaison than less. Examiners code more liaison as “registers as a careful, educated speaker.” But over-liaison (making liaisons in forbidden contexts, like after a subject noun) reads as hypercorrection and sounds worse than under-liaison.

Safe rules of thumb:

• Always do obligatory liaisons.
• After est and sont, do the liaison.
• After plural pronouns + verb, do the liaison.
• Skip optional liaisons in verb chains until your fluency is solid — easier to add liaisons than to remove them mid-sentence without stumbling.

Hindi anchor

Hindi doesn’t have French-style liaison, but it has sandhi (संधि) — sound changes at word/morpheme boundaries. Examples: सत् + आचार = सदाचार (the t turns to d before the vowel); निः + आहार = निराहार (the visarga turns to r).

The mental analogy: liaison is sandhi at the phrase level. The silent letter “comes back” and merges with the next vowel, just like a Sanskrit-style sandhi joins two morphemes. You’re already comfortable with this concept; the only new thing is that French does it across word boundaries inside a phrase, and the rules are about phrase grouping, not morphology.

If you grew up reading shloks aloud, you’ve already been doing something close to liaison. Apply that comfort here.

Respelling key

In tables below:

• bold = the liaison consonant being added
• | = a forbidden liaison spot (do NOT link)
• ˘ between words = obligatory liaison spot (DO link)

Block A — Obligatory liaisons (drill these to automatic)

Read each phrase aloud 5×. Do not pause between words. The bold consonant should feel like part of the next syllable, not the previous word.

Self-check: record les amis and un ami. If you can hear a stop or pause between les / un and amis, you didn’t link. Re-do without thinking of them as two words.

Block B — Forbidden liaisons (drill the stop)

These are pairs where a beginner naturally wants to link — but the link is wrong. The stop has to be audible.

The forbidden-liaison drill is paradoxically harder than the obligatory one, because once you start hearing liaisons everywhere, you over-apply. The fix: memorize the h-aspiré list (see h-muet-aspire.md) and the rule that subject-noun + verb never liaisons.

Block C — Same phrase, two registers

For TCF prep: aim for formal in your speaking task. The mid-row liaisons (il est tarrivé, ils sont tallés) are coded as polished by examiners.

Block D — Sentences (the real test)

Read each sentence aloud at natural speed. Mark obligatory liaisons in your head before you start. No word-boundary pauses.

Sentence 5 has two killers: Pierre et Anne (no liaison after et) and en Italie (obligatory liaison). Sentence 6 also has two: et blocks but très intelligent links. If you can do these two cleanly, you’ve got the system.

Common failure modes

How to use this file

1. Read the rules section until you can name the 3 forbidden contexts from memory.
2. Daily, 2 min: pick 5 phrases from Block A and read aloud, no pauses between words. Record once a week.
3. Twice a week: Block D sentences. Pre-mark all liaisons with a pencil before reading.
4. When you watch French content: try to transcribe one short utterance by ear, marking liaisons. Compare to the actual script. This trains the ear-to-text mapping in the reverse direction.
5. Pair with h-muet-aspire.md — you can’t do liaison correctly without knowing the h-aspiré words.
6. Pair with silent-letters.md — liaison resurrects silent letters, so you need to know which letters are silent in the first place.