Nasal

A nasal is a consonant produced with complete closure in the oral cavity (like a plosive) but with the velum (soft palate) lowered, allowing airflow to escape through the nasal cavity. The result is a voiced, resonant sound.

English Nasals

Phoneme	Place of Articulation	Examples
/m/	Bilabial: both lips close	man, hammer, swim
/n/	Alveolar: tongue tip on alveolar ridge	not, winner, sun
/ŋ/	Velar: back of tongue against velum	sing, think, finger

All three are voiced. They share the same places of articulation as the plosive pairs /p b/, /t d/, /k ɡ/ respectively, so they are homorganic with those plosives.

Distribution of /ŋ/

The velar nasal /ŋ/ has a restricted distribution compared to /m/ and /n/:

• Never occurs word-initially in English (ngam is not a possible English word)
• Occurs syllable-finally: sing /sɪŋ/, hang /hæŋ/
• Occurs before /k/ and /ɡ/: think /θɪŋk/, finger /fɪŋɡə/

A common analysis question: does singer have /ŋɡ/ or just /ŋ/? In most dialects, singer = /sɪŋə/ (no /ɡ/) but finger = /fɪŋɡə/ (with /ɡ/). This is a morphological distinction: sing + -er vs. a monomorphemic word.

The spelling ng represents /ŋ/ word-finally (ring) but /ŋɡ/ word-medially in monomorphemic words (finger, anger, longer as adjective). The spelling nk always represents /ŋk/ (think, bank).

Nasalisation of Vowels

Vowels adjacent to nasals become nasalised: the velum lowers slightly during the vowel, allowing some air through the nose. In English this is allophonic and automatic (not contrastive):

• man [mæ̃n]: the /æ/ is nasalised
• ban [bæ̃n]: nasalised
• bat [bæt]: not nasalised

In French and Portuguese, nasalised vowels are phonemic (contrastive), which can cause interference: French speakers may over-nasalise English vowels near nasals.

Nasal Assimilation

Nasals are heavily involved in assimilation processes in connected speech, where a nasal changes its place of articulation to match a following consonant:

Underlying	Assimilated	Example
/n/ → [m]	Before bilabials	ten balls → [tem bɔːlz]
/n/ → [ŋ]	Before velars	ten games → [teŋ ɡeɪmz]
/m/ → [n]	Before alveolars (less common)	None listed

This is one of the most systematic assimilation patterns in English and occurs even in careful speech.

Syllabic Nasals

In unstressed syllables, /n/ and /m/ can function as the syllable nucleus (syllabic consonants), replacing the vowel:

• button [bʌtn̩]: syllabic /n/
• rhythm [rɪðm̩]: syllabic /m/
• happen [hæpn̩]: syllabic /n/

These are marked with a subscript vertical line [n̩] in IPA.

L2 Difficulties

/ŋ/ as a Separate Phoneme

Many learners add /ɡ/ or /k/ after /ŋ/ where none belongs:

• singing → [sɪŋɡɪŋɡ] instead of [sɪŋɪŋ]
• ring → [rɪŋɡ] instead of [rɪŋ]

This is partly an orthographic effect (the spelling ng suggests two sounds) and partly L1 transfer because some languages lack /ŋ/ as an independent phoneme.

Vietnamese Learners

Vietnamese has all three nasals /m n ŋ/ and allows them in coda position, so the basic phoneme inventory is not problematic. However:

• The distribution patterns differ: Vietnamese /ŋ/ can combine with more vowels
• Nasal assimilation patterns may not transfer automatically to English connected speech
• The ng/nk spelling-to-sound correspondences need explicit teaching

Final Nasals

Some L1s (e.g., Cantonese) have restricted coda nasals. Others (e.g., Japanese) only allow /n/ in coda. Learners may merge final nasals: sin/sing/sim all pronounced the same.

Teaching Implications

• Teach /ŋ/ explicitly because many learners have not been made aware it is a separate sound from /n/ + /ɡ/.
• Use minimal pairs: sin/sing, thin/thing, ran/rang, win/wing.
• Nasal assimilation can be taught as a natural connected speech feature rather than an error to correct because it makes speech sound more natural.
• For syllabic nasals, teach button, bottle, middle type reductions as part of natural speech rhythm.