Pronouncing nasal vowels in Portuguese: ã, õ, ãe, õe

The little tilde changes everything. “pão” is not “pao” and “mãe” is not pronounced in two open syllables. In Portuguese, some vowels are nasalized: a bit of air passes through the nose, without adding a real N or M. At first, I forced it too much. Then I understood that it’s mainly a matter of ear and relaxation.

Target sounds (with IPA)

Four practical targets for the ear and mouth. Focus on the color of the vowel and the presence of a slight nasal veil, not on an added consonant.

• ã — /ɐ̃/ — as in “irmã” (sister): iɾˈmɐ̃. A central, brief vowel with nasal resonance.
• õ — /õ/ — we hear it, for example, in “bom” (good): bõ. Closed, round timbre, but without an audible final N.
• ãe — /ɐ̃j̃/ — in “mãe” (mother): mɐ̃j̃. A nasal diphthong in one syllable.
• õe — /õj̃/ — in “põe” (he/she puts): põj̃. Once again, a compact nasal diphthong.

Why is « pão » not « pao »?

The tilde on « ão » indicates a nasal diphthong whose nucleus is /ɐ̃/, which glides towards a labio-velar approximant: often noted as /ɐ̃w̃/. Therefore, « pão » is pronounced pɐ̃w̃, not pa-o, nor pan. Without the tilde, the sequence « ao » would be read differently (oral diphthong), and the word « pao » is not the standard spelling of « pão » in Portuguese.

The important thing: you first hear a ɐ̃ that is well-centered and nasal, then a brief glide towards w̃. The nose participates, but the tongue does not close the passage with an N/M consonant. It’s this continuity that gives Portuguese its unique color — a timbre that remains fluid, never choppy.

How to place the breath

• Open your mouth as if for a normal vowel. The jaw moves little: keep it relaxed.
• Let a stream of air pass through the nose. The soft palate lowers slightly, without pinching the throat.
• On nasal diphthongs (ãe, õe, ão), think "nasal core" + "little glide" (j̃ or w̃) in a single syllable.
• Test yourself: gently pinch your nose while holding the vowel. If the sound collapses suddenly, you are nasalizing correctly. If it barely changes, you are staying too oral.

If you want to rely on the IPA in context, the dedicated module in Discus shows you the transcription of each word on demand. You can explore it here: IPA and pronunciation.

Common pitfalls (and how to avoid them)

• Add an audible N/M: pãn, bõm. Correct by thinking "vowel + resonance" rather than "vowel + consonant."
• Break down mãe into two: ma-é. Keep it in one breath: mɐ̃j̃. The same goes for põe: põj̃.
• Timbre too open on /ɐ̃/: if your ã looks like a big a, center it towards ɐ, (more neutral).
• Confusing spelling and sound: “bom” is spelled with a final M but is pronounced /õ/. Do not read the letter M, listen to the nasal color.
• Ignore the variation: the exact timbre differs according to the regions of Portugal and Brazil. First anchor yourself on the stable nasality, then adjust the degree of openness based on the voices you listen to.

My experience

At first, I tried to “manufacture” the nasality, and everything sounded blocked. The breakthrough came when I thought of a very light hum that transforms into a vowel: I start the nasal support, open my mouth without releasing that veil, and slide if necessary (j̃ for mãe, w̃ for pão). I often record two versions: one with too much nasal sound, another too oral. Then I align the right one between the two. It’s almost an audio mixing adjustment. And once the ear is set, the hand follows in writing: the tilde becomes a real signal, not just a decoration.

Sources and references

That Portuguese has phonemic nasal vowels is documented in reference descriptions according to Britannica. For symbols and diacritics, the reference remains the International Phonetic Association, via its IPA chart.

Next practical step

Choose 5 words: « irmã », « bom », « mãe », « põe », « pão ». Note their IPA, record yourself, pinch your nose to test the nasality, then listen again while comparing to the symbols. Two minutes a day is enough to stabilize these key sounds.