Pronunciation: im/in prefix

How do you pronounce the letters “im” or “in” when they occur at the start of a word in French? Are they nasal or not?

As you can see in the two tables below, the rules are simple. “im” or “in” plus a consonant are nasal. But “imm,” “inn,” “im + vowel,” or “in + vowel” are all oral, which means not nasal.

Use the phonetics and the audio links in the tables below to understand the differences.

Nasal

PrefixExample PhoneticsAudio
“im” + consonantimportantɛ̃pɔʀtɑ̃important
“in” + consonantincroyableɛ̃kʀwajablincroyable

Oral (not nasal)

PrefixExamplePhoneticsAudio
“im” + vowelimitateurimitatœʀimitateur
“in” + vowelinoubliableinublijablinoubliable
“imm”immobilierimɔbiljeimmobilier
“inn”innovateurinɔvatœʀinnovateur

Don’t miss out on new posts – subscribe now!

Don’t miss new articles!

Get 1 email a week with new articles about French

We don’t spam! Read more in our privacy policy

Similar Posts

  • x and ex

    A common pronunciation mistake by French learners is the letter “x” and the letter combination “ex.” To fix these mistakes, we need to start at with the French alphabet and the letter “x.” In French, “x” in the alphabet is not pronounced EX like it is in English. Instead, it is pronounced EEKS. That’s important…

  • Accents on letters

    Accented letters in French are essential for correct pronunciation and often carry historical significance. The five main diacritical marks in French are the acute accent (é), grave accent (è), circumflex (ê), tréma (ë), and cedilla (ç). Each affects pronunciation, and some even reveal fascinating linguistic evolution—particularly the acute and circumflex accents, which often replace a…

  • le flux sonore

    One of the essential differences between the English and French languages is the concept of “le flux sonore,” or “sound flow” in French. A French sentence should sound like a more or less continuous flow of sound, interrupted only by small pauses for commas and longer pauses for full stops. In order to achieve this,…

  • eu pronunciation

    If you’re learning French, you might find it odd that the past participle of avoir is eu [pronounced /y/], which rhymes with du [dy], vu [vy], and su [sy], but not with peut [pø] from the verb pouvoir. This might seem confusing at first, especially since both eu and peut come from verbs and are…

  • contact vs aspect

    Some French words, like contact, have a clearly pronounced -ct, while others, like aspect, have a silent -ct. This difference is due to phonetic evolution, word stress, and borrowing history. 1. The Role of Stress and Borrowing History 2. When is -CT Pronounced in French? The -ct is pronounced when: 3. When is -CT Silent?…

  • cours vs corps

    One of the classic pronunciation pitfalls for French learners is the word “cours” (as in un cours de français)—which is often confused with “corps” (as in le corps humain). Although these words are spelled similarly, they sound quite different in French. 1. The Basics: What Do These Words Mean? 2. Pronunciation Breakdown “Cours” [kuʁ] ✅…