ص (ṣād) is a voiceless alveolar or denti-alveolar fricative with a secondary posterior (“emphatic”) gesture. The front constriction is similar to /s/; the clinically important contrast is further back in the vocal tract.
Written by Bodour Imseeh, BSc (Hons), MSc, bilingual Speech and Language Therapist specialising in Arabic–English speech. · Last reviewed 16 September 2026
This is a broad Arabic guide; realisations vary across dialects and speakers.
| س /s/ | ص /sˤ/ | |
|---|---|---|
| Frame | Broad Arabic, see dialect notes | Broad Arabic, see dialect notes |
| Place | Alveolar or denti-alveolar | Alveolar or denti-alveolar, with a secondary posterior gesture |
| Manner | Grooved fricative | Grooved fricative |
| Voicing | Voiceless | Voiceless |
| Soft palate | Raised, port closed | Raised, port closed |
| Pharyngeal space | Relatively open | Narrowed by the secondary posterior gesture |
| Tongue tip | Front constriction at or near the alveolar ridge | Front constriction at or near the alveolar ridge |
| Tongue body | No secondary posterior constriction | Often more retracted; exact contour varies by speaker and dialect |
| Arabic letter | س | ص |
| Closest English comparison | English /s/ | None |
The front constriction is similar. The clinically important contrast is the secondary gesture further back in the vocal tract.
The contrast is posterior. A mirror shows the client nothing useful, and a clinician watching the mouth sees a well-formed /s/. In connected speech the first sign is usually in the surrounding vowels rather than in the consonant itself, so a transcription focused on the consonant can look clean while the contrast is absent.
It is also easy to mishear in the other direction. A correct ص can be recorded as a distorted /s/ by a clinician expecting an English inventory, which turns a target-appropriate production into a therapy goal.
Emphasis in Arabic spreads onto neighbouring segments, so judge the contrast across the word rather than at the consonant alone.
Emphasis is present across Arabic varieties, but the precise articulation is not uniform. Reported differences include the height and degree of the posterior constriction, how much the tongue body lowers, and how far emphasis spreads onto adjacent syllables. Some speakers show lip protrusion; others do not.
Practical consequence: compare a client against speakers of their own variety, not against a single reference production. If you do not have that comparison available, weigh the vowel context alongside the consonant before deciding the contrast is absent.
There is little published intervention evidence for this contrast. Treat the following as prompts to trial and monitor, not as an established protocol.
Cues aimed at the visible articulators tend not to transfer here. The tongue tip is usually already doing the right thing, so mirror work and tip placement prompts reinforce the part that is not in error.
These pages are drawn from Arabic Speech Sounds, a clinical reference covering nine Arabic speech sounds.
All Arabic speech sounds — the index, including the five sounds covered without an animation
The animation is a simplified schematic informed by published articulatory imaging. It is not traced from a single speaker and is not a production target. Tongue body shape and the degree of posterior constriction vary between speakers and dialects.
How is Arabic ص different from /s/?
The tongue tip does much the same thing in both. ص adds a secondary posterior gesture: the tongue body is often more retracted and the pharyngeal space narrows, which also changes the vowels either side. The exact contour varies by speaker and dialect. For a parent: the front of the tongue does the same thing, but something extra happens further back, and it changes the vowel next to it.
Is ص just a heavier or stronger /s/?
No. Loudness and effort are not the contrast. Asking a client to say it harder will not produce it, because the difference is a secondary posterior gesture further back in the vocal tract.
How do I know whether a client is producing ص correctly?
Listen across the word rather than at the consonant alone, since emphasis spreads onto neighbouring sounds, and compare against a speaker of the same dialect where you can.
© 2026 Bilingual SLT. Original animation and text. You may use this page with your own clients, and when teaching colleagues within your own organisation. Do not republish it, upload it elsewhere, adapt it, sell it, or use the animation, code or text to create other materials, without written permission. Research sources are credited in full on this page.
