Liaison — The Glue That Makes French Sound Like... French

"If French pronunciation is a sweater, liaison is the yarn sewing the sleeves to the body. Ignore it and you get a draft." — Your slightly dramatic TA

What is liaison? (Short, sweet, and surprisingly dramatic)

Liaison is the phenomenon where a normally silent final consonant at the end of a word is pronounced because the next word begins with a vowel (or mute h). We mark it in learning with a tie symbol: ‿. It’s not just cute — it changes meaning, flow, and whether you sound like someone who’s actually studied French or someone who’s winging it.

This lesson builds on your earlier IPA introduction (you already know how to read /l/ /z/ /t/ and vowels) and the nasal vowel practice (remember /ɔ̃/ in "ont"?), and it ties nicely to our verbs unit because liaison loves to hang out between pronouns and verbs.

Three types of liaison (the rules you should memorize first)

1. Liaison obligatoire (mandatory) — Do it in formal/careful speech. The language expects the consonant.
2. Liaison interdite (forbidden) — Don’t do it. Ever. (In everyday speech, breaking this is a clear giveaway.)
3. Liaison facultative (optional) — You can do it in formal speech, or skip it in casual chat.

Quick table (rules + examples + IPA) — keep this pinned in your brain

Rule breakdown with juicy examples

Liaison obligatoire (do it)

• After determiners and prepositions: les amis → les‿amis /le.z‿ami/. If you say les amis without the /z/, someone might still understand you, but it won’t sound polished.
• Subject pronoun + verb (especially in plural): nous avons → nous‿avons /nu.za.vɔ̃/ ; ils ont → ils‿ont /il.z‿ɔ̃/ (see — your nasal vowel work pays off!).
• After adjectives that precede a noun: grands hommes → grands‿hommes /gʁɑ̃.d‿ɔm/ (remember 'h' is mute here).

Why? Because these liaisons keep the sentence rhythm intact and avoid vowel collisions.

Liaison interdite (don’t do it)

• After singular nouns: mon ami est — no liaison between ami and est; you say /mɔ̃ ami ɛ/ not ami‿est.
• After et (and): toi et moi — no liaison: /twa e mwa/. If someone forces et‿alors it sounds posh or odd.
• After inversions with proper names and many fixed expressions — for learners, a safe rule: don’t force liaison unless you’ve seen it called out as allowed.

Liaison facultative (your social filter)

• After plural nouns before adjectives: des enfants attentifs — you can say /de.z‿ɑ̃fɑ̃ atɑ̃.tif/ (more formal) or /de ɑ̃fɑ̃ atɑ̃.tif/ (casual).
• After some verbs before a vowel when the word boundary is clear and in formal speech: ils parlent vs ils parlent anglais. In casual speech you might drop it.

If in doubt: in formal or recorded speech, prefer the liaison; in relaxed conversation, it’s safer to be a little conservative unless you know the pattern.

Liaison & verbs — where grammar meets rhythm

Your verbs unit (present tense, reflexive verbs, pronouns) is where liaision becomes spicy:

• Subject pronoun + verb: ils arrivent → /il.za.ʁiv/ (obligatory).
• Verb + pronoun clitic (like in imperative constructions): Donne-le! — this is not classical liaison but enchainement (linking) with the pronounced consonant: /dɔn(ə)-lə/.
• Reflexive verbs: elle s'habille → elle‿s'habille /ɛl.sa.bij/. Here the s' (se) is a consonant /s/ in speech, so yes, liaison/enchaînement — treat contractions like real consonants.
• Inversion questions: Est-il prêt? → /ɛ.t‿il pʁɛ/ (note how /t/ becomes the bridge). The little inserted -t- in some inversions is a special historical hack but it functions like liaison glue.

Tip: always think about clitics (me, te, le, la, nous, vous, se). They love to connect.

Listening practice (do this daily — 5 minutes is enough to improve dramatically)

1. Pick short sentences and mark possible liaisons with ‿.
2. Listen to a native speaker (newsreader or audiobook for clear speech). Pause after each phrase and repeat with liaison, then without. Feel the rhythm change.
3. Record yourself reading both versions. Compare with IPA if you like — remember your IPA intro! Example exercise below.

Code block (exercise):

1) les amis (mark & read) => les‿amis  -> /le.z‿ami/
2) elle est arrivée => elle‿est arrivée -> /ɛl.l‿ɛ.ta.ʁi.ve/ (in careful speech)
3) toi et moi => no liaison -> /twa e mwa/

Mini practice (answers after — don’t peek!)

Decide: Obligatoire (O), Interdite (I), Facultative (F)

1. les étudiants arrivent
2. un ami intéressant
3. et elle?
4. des hommes grands
5. ils ont

(Answers: 1 O, 2 I (after un (singular) there's no liaison between "ami" and preceding word; though between un and ami there is actually no liaison — wait: this is tricky — but to not confuse beginners, clarify below.) )

Clarification: Liaison after un (and other singular indefinite determiners) is usually forbidden before vowel (we say /ɛ̃ ami/). But after les (plural determiner) it's obligatory.

Answers: 1 O, 2 I (liaison forbidden after singular), 3 I, 4 F (optional/formal), 5 O

Final pep talk + cheat sheet

• Memorize the big categories: determiner→noun (do it), pronoun→verb (do it), après et (don’t).
• Use your IPA skills: /z/ and /t/ are common liaison sounds (listen for them). Your nasal vowel practice helps with words like ont /ɔ̃/ — joining it will sound natural.

Practice: listen to 3 short French news headlines. Try to transcribe where liaisons occur using the ‿ symbol. Then read them out loud, record, and compare.

If French fluency were a party, liaison is the person who introduces everyone — and yes, if you introduce people properly, the party is way more fun.

Version note: This is your pragmatic, charming, slightly chaotic guide to liaison. Use it in conversation, in recordings, and when you want to sound like you care about French.

Want a follow-up? I can make: a printable 1-page liaison cheat sheet, 20 listening drills with native audio timestamps, or a set of minimal-pair flashcards (z/t/none) to drill those tricky endings.