Nasal consonant

A nasal consonant is produced by lowering the velum so air escapes through the nose while the oral cavity is blocked; common cross-linguistic sounds include [m], [n], and [ŋ].

Author: Leandro Alegsa Creation date: November 13, 2022 Last updated: May 28, 2026

Overview

A nasal consonant is a speech sound produced when the velum (soft palate) is lowered to allow airflow through the nasal cavity while a complete or partial closure in the mouth prevents air exiting orally. Nasal consonants are a type of consonant; they occur in most of the world's languages and often serve as distinct phonemes. See consonant for general context and velum (soft palate) for the anatomical mechanism.

Articulatory characteristics

In a nasal consonant the oral tract forms a stop or constriction at some place of articulation (for example, lips or tongue against the alveolar ridge) while the lowered velum opens the nasal passage. Air flows through the nose, producing a resonance different from oral stops. Nasals are typically voiced in many languages because the open nasal passage permits vocal fold vibration to continue during the closure.

Common types

Bilabial nasal: [m], as in English man.
Alveolar nasal: [n], as in English no.
Velar nasal: [ŋ], as in English sing.

Other places of articulation exist (palatal [ɲ], retroflex [ɳ], labio-dental, or uvular nasals) and some languages contrast multiple nasal places. Examples from English and other languages are discussed in introductory phonetics texts; compare with English realizations for familiar examples.

Phonological behavior and development

Nasal consonants can participate in common phonological processes: assimilation (a nasal takes the place of articulation of a following consonant, e.g., in many languages /n/ becoming [m] before /p/), denasalization in certain contexts, and prenasalization where a nasal onset precedes an obstruent. Nasals may also become syllabic, acting as the nucleus of a syllable (English button pronounced [ˈbʌtən] or [ˈbʌtn̩]). Historically, nasals are stable sounds and widely attested in language change, often preserved when other consonants shift.

Functions and notable facts

Nasal consonants serve both lexical contrasts (different words) and phonotactic roles (permitted combinations and positions). They are acoustically distinct because of their nasal resonance and antiresonances. While most languages have voiced nasals, voiceless nasals and nasalized vowels are separate phenomena: nasalized vowels involve lowering the velum without an oral closure. Study of nasals intersects anatomy, acoustics, and phonology and is a standard topic in introductory descriptions of speech sound systems.

Questions and Answers

Q: What is a nasal consonant?

A: A nasal consonant is a type of consonant produced with a lowered velum in the mouth, allowing air to come out through the nose, while the air is not allowed to pass through the mouth because something (like the tongue or the lips) is stopping it.

Q: What is the difference between a nasal consonant and a non-nasal consonant?

A: The difference between a nasal consonant and a non-nasal consonant is that a nasal consonant is produced by allowing air to come out through the nose, while the air is not allowed to pass through the mouth because something is stopping it.

Q: What are some examples of nasal consonants in English?

A: Some examples of nasal consonants in English are [n] and [m], in words such as nose and mouth.

Q: How are nasal consonants produced?

A: Nasal consonants are produced with a lowered velum in the mouth, allowing air to come out through the nose, while the air is not allowed to pass through the mouth because something (like the tongue or the lips) is stopping it.

Q: What is the role of the velum in producing a nasal consonant?

A: The role of the velum in producing a nasal consonant is to lower in the mouth so that air can come out through the nose, while the air is not allowed to pass through the mouth because something (like the tongue or the lips) is stopping it.

Q: Can nasal consonants be produced without a lowered velum?

A: No, nasal consonants cannot be produced without a lowered velum in the mouth.

Q: What are the benefits of using a nasal consonant in speech?

A: The benefits of using a nasal consonant in speech include adding variety to speech sounds, creating a unique sound in a language, and making speech sound more natural and flowing.

Author

Creation date: November 13, 2022

Last updated: May 28, 2026