The consonants

Unlike the vowel system, the consonant system of Portuguese is stable and economical: nineteen phonemes that vary little from one variety to another. Its richness lies less in the number of units than in allophony — in the way each consonant changes its realisation according to its place in the syllable and the sounds around it. This is where European Portuguese (EP) shows some of its most characteristic traits.

The inventory

The nineteen consonants fall into five manners of articulation. The phonemes are distinguished chiefly by voicing (voiceless vs. voiced) and place of articulation.

	Labial	Dental/Alveolar	Palatal	Velar/Uvular
Stops	p · b	t · d	—	k · g
Fricatives	f · v	s · z	ʃ · ʒ	—
Nasals	m	n	ɲ	—
Laterals	—	l	ʎ	—
Rhotics	—	ɾ	—	ʁ

The palatals [ɲ] and [ʎ] correspond to the digraphs nh and lh (vinho “wine”, filho “son”); they have no single letter of their own and are always written with two signs. The sibilants ([s z ʃ ʒ] ) and the rhotics ([ɾ ʁ] ) each have a dedicated article, given their complexity.

Lenition of the voiced stops

The most audible allophonic trait of EP affects [b d g] . Between vowels — and, more broadly, away from a pause or a nasal consonant — these stops weaken and surface as fricatives or approximants: [b] becomes [β] , [d] becomes [ð] , and [g] becomes [ɣ] . The airflow is no longer fully blocked; the lips or the tongue merely approach the point of articulation.

The contrast with the voiceless counterparts [p t k] survives, since these undergo no such weakening. The process is gradient and contextual: the same word appears with a full stop after a pause (Gato!) and with an approximant within an utterance (o gato).

The dark l

In EP the l is articulated with the back of the tongue drawn towards the soft palate — a “dark” or velarised l [ɫ] . This colouring is present in every position but clearest in syllable-final position: mal “badly” [ˈmaɫ] , sol “sun” [ˈsɔɫ] , Portugal [puɾtuˈɣaɫ] . It is close to the l of English full and quite unlike the clear, front l of Spanish or Italian.

Consonants and syllable position

Position deeply conditions how a consonant is realised. In syllable-final position (the coda), the system undergoes several characteristic neutralisations:

• the sibilants [s z] palatalise: final s and z sound [ʃ] before a pause or a voiceless consonant, and [ʒ] before a voiced one — lápis “pencil” [ˈlapiʃ] , desde “since” [ˈdeʒdɨ] ;
• the opposition between the two rhotics is cancelled: the caro ~ carro contrast is possible only between vowels, never in the coda, where only the simple tap occurs;
• coda nasals are not realised as a full consonant: they nasalise the preceding vowel and vanish as a segment — fim “end” is [ˈfĩ] , not [fim].

This sensitivity to context is why a single letter — s, l, r — stands for such different sounds depending on where it falls, and why the phonetic transcription of running speech rarely matches the spelling of the isolated words.