Sifat al-Huruf: What Are Letter Characteristics?

Every Arabic letter has two things that define it completely: a makhraj, the physical point where its sound begins, and a set of sifat (صفات, singular sifah), the qualities describing how that sound behaves once it starts. You have spent several lessons mastering the first half. This lesson begins the second.

Sifat matter because makhraj alone is frequently not enough to tell letters apart. You have already seen this repeatedly: taa, daal, and taa-emphatic share one exit point; jeem, sheen, and yaa share another; seen, saad, and zaay share a third. In every one of those cases, the letters sounded different only because their sifat were different, even while their makhraj stayed identical.

By the end of this lesson, you will know the difference between the two families of sifat, be able to name several qualities you have already half-learned in earlier lessons, and understand why some sifat are fixed properties of a letter that never change, no matter what vowel or position that letter appears in.

Sifat al-huruf (صفات الحروف) means "the characteristics of the letters." The singular is sifah (صفة) — one characteristic — and the word itself simply means "a quality" or "an attribute" in ordinary Arabic, the same word you would use to describe any trait of any object.

Classical tajweed organises every sifah into one of two families. Sifat mutadaddah (صفات متضادة), "paired sifat," come as opposite pairs — every single letter in the alphabet takes one side or the other of each pair, with no exceptions. Sifat ghair mutadaddah (صفات غير متضادة), "unpaired sifat," work differently: only some letters carry each one, and there is no opposite quality being tracked for the rest.

Tajweed counts five paired sifat and seven unpaired sifat, giving every Arabic letter a small profile: which side of each of the five pairs it falls on, plus whichever of the seven unpaired qualities it happens to carry, if any. Steps 3 and 4 walk through both families.

Each of these five pairs applies to every single letter — every letter takes exactly one side of each.

• Hams (whispered) vs. Jahr (voiced) — ten letters are hams, produced with breath and no vocal-fold vibration; the remaining nineteen are jahr, voiced.
• Shiddah (full stop) vs. Rakhawah (full continuant) — eight letters are shadid, stopping the air completely; sixteen are rakhw, letting air flow continuously; five sit genuinely in between (tawassut), neither fully stopping nor fully flowing: laam, noon, 'ain, meem, and raa.
• Isti'la (elevated, heavy) vs. Istifal (lowered, light) — seven letters raise the back of the tongue and are heavy; twenty-two do not, and are light.
• Itbaq (fully pressed) vs. Infitah (open) — four letters press the tongue completely against the roof of the mouth, trapping the sound briefly; the remaining twenty-five do not.
• Idhlaq (fluent) vs. Ismat (restrained) — six letters, produced at the very tip of the tongue or the lips, are especially easy to pronounce even in clusters; the other twenty-three are not.

Two of these pairs — hams/jahr and isti'la/istifal — you have already met by name in several earlier lessons; the other three are new here, but you have felt their effects already without the label.

Unlike the paired sifat, these seven belong only to specific letters, with no corresponding opposite quality tracked for everyone else. Several of these will already feel familiar.

• Safeer (whistling) — seen, saad, zaay, met in the front-teeth letters lesson.
• Qalqalah (echoing bounce) — qaf, taa-emphatic, baa, jeem, daal, met across several earlier lessons.
• Leen (softness) — waw and yaa, sakin and preceded by a fathah, a third role for these two letters alongside their consonant and madd-letter roles.
• Inhiraf (deviation) — laam and raa, each diverted slightly toward a neighbouring exit point.
• Takrir (trilling) — raa alone, the light bounce first introduced in the laam, noon, and raa lesson.
• Tafashi (spreading) — sheen alone, met alongside jeem and yaa in an earlier lesson.
• Istitalah (elongation) — daad alone, the quality behind Arabic's nickname as "the language of daad."

For a full, dedicated treatment of one of the most important unpaired sifat, see our lesson on the qalqalah letters.

Return to the example that opened this lesson: taa (ت), daal (د), and taa-emphatic (ط) all share exactly the same makhraj, the tip of the tongue against the base of the upper incisors. If makhraj were the whole story, these three letters would be indistinguishable. They are not, because their sifat profiles are completely different.

Taa is hams (whispered), shadid (full stop), and istifal (light). Daal is jahr (voiced), shadid, and istifal — voice is the only thing separating it from taa. Taa-emphatic is jahr, shadid, and isti'la (heavy) — the extra heaviness is what makes it the clear outlier of the three, even though all three seal the tongue against the exact same spot.

This is the real reason tajweed teaches makharij and sifat as two separate systems rather than one: makhraj narrows a letter down to a small group of candidates, and sifat finish the job of identifying it precisely. Neither system alone is sufficient — you have needed both, every single lesson, without always naming them separately.

Some sifat are fixed properties of a letter — they do not change depending on the vowel attached, the letter's position in a word, or how fast you are reciting. This is a habit you have already been asked to build in nearly every earlier lesson: keep qaf heavy even with a light vowel like kasrah; keep daad's heaviness through a sukoon; keep a hams letter's breathiness audible even when it is followed by a voiced letter.

This matters because a beginner's most common instinct is to let sifat drift toward whatever feels easiest in the moment — flattening a heavy letter, or dropping the whisper on a hams letter when speaking quickly. Neither drift is a matter of accent or style; both change the letter's defined profile, and in some cases, the resulting sound edges toward a different letter entirely.

The practical rule going forward is simple: once you know a letter's sifat profile, that profile travels with the letter everywhere it appears — through every vowel, every position in a word, and every speed of recitation.

The most common beginner mistakes with sifat fall into two groups. The first is flattening: reading a heavy (isti'la) letter as though it were light, especially when it carries a kasrah, which naturally pulls other letters toward a lighter sound. The second is silencing: dropping the audible breathiness of a hams letter, particularly when it is followed immediately by a voiced letter, since the mouth wants to smooth the transition.

Both mistakes come from the same root cause: treating sifat as background texture rather than as defining features. The fix is the same one you have used throughout this entire series — isolate the letter, exaggerate the quality deliberately until it is unmistakable, then bring it back down to a natural but still audible level.

For recognition practice, take a short phrase and, for each letter, name one paired sifah (hams or jahr) and check whether it carries any unpaired sifah at all. This single exercise, repeated across a page, builds the same instinct that a fluent reciter uses automatically.

Revisit one letter you already know well and build its full sifat profile from scratch: which side of each of the five paired sifat does it take, and does it carry any of the seven unpaired sifat? Do this for two or three letters from different zones you have already studied, and the whole system will start to feel far less abstract.

For listening, the most useful review is cross-lesson: pick a short phrase and, for every letter, silently name both its makhraj (from earlier lessons) and now its sifat profile. This ties the two halves of letter identity together in a single pass.

Quick review: two families of sifat — five paired, where every letter takes a side, and seven unpaired, carried only by specific letters — and together with makhraj, they give every Arabic letter a complete, precise identity. Dedicated lessons on hams and jahr and the qalqalah letters are waiting to take you deeper into two of these qualities specifically. The fastest way to know your own sifat are landing correctly is to have a trained ear check you directly. Book a free evaluation and a Waraqa teacher will listen for both makhraj and sifat together, letter by letter.