גִּזְרַת הַכְּפוּלִים is the class whose second and third radicals are the same letter — ס־ב־ב, ק־ל־ל, ח־ג־ג, ג־ל־ל, ת־מ־ם. Pa'al כפולים makes the case that inside that binyan the class is a reading skill rather than a production skill. This page asks the wider question: what happens to the doubling in the other six moulds, and the answer is more interesting than the pa'al answer, because in several of them the class is alive and ordinary.
ס־ב־ב is the root to build on. Pealim gives it a live verb in all seven binyanim, which almost no root in Hebrew manages.
The grid, on ס־ב־ב
| בניין | past (he) | present m.sg. | infinitive | Meaning |
|---|---|---|---|---|
| pa'al | סָבַב saváv ~ סַב sav | סוֹבֵב sovév ~ סַב sav | לָסוֹב lasóv ~ לִסְבּוֹב lisbóv | revolved, turned (literary) |
| nif'al | נָסַב nasáv | נָסָב nasáv | לְהִיסּוֹב lehisóv | centres on, turns on (formal) |
| pi'el (polel) | סוֹבֵב sovév | מְסוֹבֵב mesovév | לְסוֹבֵב lesovév | turned something, spun it |
| pi'el (ordinary) | סִיבֵּב sibév | מְסַבֵּב mesabév | לְסַבֵּב lesabév | caused, brought about (formal) |
| pu'al (polal) | סוֹבַב sováv | מְסוֹבָב mesováv | — none exists | was turned |
| hif'il | הֵסֵב hesév | מֵסֵב mesév | לְהָסֵב lehasév | turned, transferred, redirected |
| huf'al | הוּסַב husáv | מוּסָב musáv | — none exists | was transferred, was converted (formal) |
| hitpa'el (hitpolel) | הִסְתּוֹבֵב histovév | מִסְתּוֹבֵב mistovév | לְהִסְתּוֹבֵב lehistovév | turned around, wandered about |
Read the ב column down and the doubling is doing something different in almost every row.
One doubling, three disguises
| How it surfaces | Where | What you see |
|---|---|---|
| Both letters written | polel, hitpolel, ordinary pi'el | סוֹבֵב · הִסְתּוֹבֵב · סַבֵּב — two ב's on the page |
| One letter with a dagesh | pa'al suffixed cells, nif'al | סַבּוֹתִי sabóti · נָסַבָּה nasába · לְהִיסּוֹב |
| One letter, and a long vowel instead | hif'il, huf'al, pa'al citation forms | הֵסֵב · הוּסַב · לָסוֹב · יָסֵב |
The third row is the one worth naming, because it is exactly what a hollow root does. הֵסֵב and יָסֵב carry the prefix vowels of הֵקִים and יָקִים, not of הִסְבִּיר and יַסְבִּיר, and the reason is structural rather than coincidental: a geminate and a hollow root both hand hif'il a two-consonant stem, and hif'il solves that problem the same way in both. The point is set out from the hollow side on ע״ו across the binyanim. A kamatz or tsere prefix means a short stem — it does not tell you which class the stem came from.
הסתובבנו בשוק שעתיים ובסוף קנינו רק זיתים.
histovávnu bashúk she'atáyim uvasóf kanínu rak zeitím
We wandered around the market for two hours and in the end bought nothing but olives.
סובבתי את הבורג עד הסוף והמדף עדיין זז.
sovávti et habóreg ad hasóf vehamadáf adáyin zaz
I turned the screw all the way in and the shelf still moves.
אפשר להסב את הכרטיס למישהו אחר?
efshár lehasév et hakartís lemíshehu akhér?
Can the ticket be transferred to somebody else?
הבניין הוסב למלון לפני שנתיים.
habinyán husáv lemalón lifnéi shnatáyim
The building was converted into a hotel two years ago. (formal / journalistic)
כל הדיון נסב סביב שאלה אחת שאף אחד לא שאל בקול.
kol hadiyún nasáv savív she'elá akhát she'áf ekhád lo sha'ál bekól
The whole discussion turned on one question nobody asked out loud. (formal)
The dictionary is watching the class dissolve
The honest statement about כפולים is that the classical paradigms are literary, and that Modern Hebrew has been quietly rebuilding these roots as sound roots or moving them out of pa'al altogether. The evidence for that is not an opinion — it is sitting inside single dictionary entries, as a doublet in every binyan that has one.
| Entry | Classical form | Rebuilt form, in the same entry |
|---|---|---|
| ח־ג־ג pa'al | לָחוֹג · חַגּוֹתִי · יָחוֹג | לַחְגּוֹג · חָגַגְתִּי · יַחְגּוֹג |
| ס־ב־ב pa'al | לָסוֹב · סַבּוֹתִי · יָסוֹב | לִסְבּוֹב · סָבַבְתִּי · יִסְבּוֹב |
| ס־ב־ב hif'il | הֲסִיבּוֹתִי hasibóti | הֵסַבְתִּי hesávti |
| ק־ל־ל hif'il | הֲקִילּוֹתִי hakilóti | הֵקַלְתִּי hekálti |
ח־ג־ג is the clean case, because both sets sit in one Pealim entry and every Israeli uses only the right-hand one. ס־ב־ב is the messier and more revealing one: Pealim prints two infinitives, two past paradigms and three futures for its pa'al, and in ordinary speech nobody uses any of them — the meanings were taken over long ago by the polel סוֹבֵב and the hitpolel הִסְתּוֹבֵב, which are completely everyday. A verb form can be regularised out of existence and displaced out of existence at the same time.
כל השכונה חגגה עד שתיים בלילה ואף אחד לא התלונן.
kol hashkhuná khagegá ad shtáyim baláyla ve'áf ekhád lo hitlonén
The whole neighbourhood celebrated until two in the morning and nobody complained.
ק־ל־ל: a class member with no pa'al at all
The root behind קַל "light, easy" looks like it should be the class's showpiece, and it turns out to have no pa'al verb in Modern Hebrew whatsoever. Pealim's ק־ל־ל entry holds two verb entries, each with its own passive:
- pi'el קִילֵּל kilél "to curse", infinitive לְקַלֵּל, passive קוּלַּל.
- hif'il הֵקֵל hekél "to ease, to lighten", infinitive לְהָקֵל, future יָקֵל, passive הוּקַל hukál.
And קַל itself is an adjective, not a past-tense verb — a fact worth checking before you try to conjugate it, because it is the first form anybody reaches for. Where the pi'el and hif'il write the two ל's out or collapse them under a long vowel, the adjective simply has one ל and a patach.
The huf'al of this root is the everyday member of the family. הוּקַל לִי — literally "it was lightened for me" — is what an Israeli says for "I was relieved", and it is a fully geminate form hiding in plain conversation.
הוקל לי כששמעתי שכולם הגיעו הביתה.
hukál li ksheshamáti shekulám higí'u habáyta
It was a relief to hear that everyone had got home.
הם החליטו להקל בתנאי הקבלה בגלל מיעוט הנרשמים.
hem hekhlítu lehakél bitna'éi hakabalá biglál mi'út hanirshamím
They decided to relax the entry requirements because of the low number of applicants. (formal)
הוא קילל את הנהג שלפניו ונסע הלאה כאילו כלום.
hu kilél et hanahág shelefanáv venasá hál'a ke'ílu klum
He swore at the driver in front of him and drove on as if nothing had happened.
Where the class is genuinely alive
Line the seven rows up against actual speech and the picture is not "a dying class" but a redistribution. The pa'al is literary. The nif'al and the ordinary pi'el are formal. But pi'el's polel, hitpa'el and hif'il are ordinary Hebrew — סוֹבֵב, הִסְתּוֹבֵב, הֵסֵב, הֵקֵל, and their passives הוּסַב and הוּקַל — and a learner meets הסתובב long before ever meeting a geminate paradigm. The class does not need to be produced in pa'al. It needs to be recognised, so that הסתובב, הוקל and מוסב read as one family rather than three unrelated verbs.
And the hitpa'el is where that recognition pays, because there the geminates and the hollow roots become one paradigm. הִסְתּוֹבֵב is ס־ב־ב with both of its ב's on the page; הִתְעוֹרֵר wake up, הִתְגּוֹרֵר reside, הִתְכּוֹנֵן get ready and הִתְלוֹנֵן complain are ע־ו־ר, ג־ו־ר, כ־ו־ן and ל־ו־ן — hollow roots with a single last radical, written twice because the hitpolel has a slot for it. Pealim files every one of them under the polel model, and they inflect identically:
| Cell | ס־ב־ב (geminate) | ע־ו־ר (hollow) | כ־ו־ן (hollow) |
|---|---|---|---|
| past אֲנִי | הִסְתּוֹבַבְתִּי histovávti | הִתְעוֹרַרְתִּי hit'orárti | הִתְכּוֹנַנְתִּי hitkonánti |
| past הוּא | הִסְתּוֹבֵב histovév | הִתְעוֹרֵר hit'orér | הִתְכּוֹנֵן hitkonén |
| past הִיא | הִסְתּוֹבְבָה histovevá | הִתְעוֹרְרָה hit'orerá | הִתְכּוֹנְנָה hitkonená |
| present m.sg. | מִסְתּוֹבֵב mistovév | מִתְעוֹרֵר mit'orér | מִתְכּוֹנֵן mitkonén |
| future הוּא | יִסְתּוֹבֵב yistovév | יִתְעוֹרֵר yit'orér | יִתְכּוֹנֵן yitkonén |
| infinitive | לְהִסְתּוֹבֵב lehistovév | לְהִתְעוֹרֵר lehit'orér | לְהִתְכּוֹנֵן lehitkonén |
התגורר runs exactly like התעורר and התלונן exactly like התכונן, so those four verbs are one table between them. Nothing on the surface says which of the two sources the doubled letter came from, and nothing needs to: the tsere–patach–shva alternation down the column, and the mil'el stress in hit'or*á*rti, are the ordinary hitpa'el past. The class contributes only the cholam.
התלוננו על הרעש שלוש פעמים ואף אחד לא בא.
hitlonánu al hará'ash shalósh pe'amím ve'áf ekhád lo ba
We complained about the noise three times and nobody came.
הם מתגוררים בדירה הזאת כבר עשרים שנה.
hem mitgorerím badirá hazót kvar esrím shaná
They have been living in this flat for twenty years. (formal — on a form or in a report; in speech you would say גרים)
תתכונן, זה הולך להיות ערב ארוך.
titkonén, ze holékh lihyót érev arókh
Brace yourself — it's going to be a long evening. (informal, to a man)
Common Mistakes
1. Using the hitpolel where the polel belongs. English turn covers both columns of the grid; Hebrew splits them, and הסתובב never takes an object.
❌ תסתובב את הכיסא לכיוון החלון
Incorrect — הסתובב is intransitive: you turn around, you do not turn something around. Turning an object is the polel סובב: תסובב את הכיסא לכיוון החלון.
✅ תסובב את הכיסא לכיוון החלון, ככה תראה טוב יותר.
tesovév et hakisé lekhivún hakhalón, kákha tir'é tov yotér
Turn the chair towards the window — you'll see better that way. (to a man)
2. Treating קל as a past-tense verb. Every other class member here is a verb, and קל is the word you meet first.
❌ המבחן קל אתמול
Incorrect — קַל is an adjective, and an adjective carries no tense. The past needs an explicit copula: המבחן היה קל אתמול. (For ‘I was relieved’ the root does have a verb, and it is the huf'al: הוקל לי.)
✅ המבחן היה קל בהרבה ממה שציפיתי.
hamivkhán hayá kal beharbé mimá shetsipíti
The exam was a lot easier than I'd expected.
3. Reading the polel's vav as a root letter. It is the vowel the pattern supplies to a two-consonant stem, and mistaking it for a radical is what makes the lookup fail.
❌ מסתובב → שורש ס־ו־ב
Incorrect — Pealim files מסתובב, מסובב, סובב and לסוב all under ס־ב־ב. The vav is the pattern's, not the root's; the two ב's you can see in מסתובב are the two radicals, and the root's own doubling is what forced the vav in.
4. Producing the classical past. Both columns of the doublet table are real Hebrew; only one of them is spoken.
חגגנו את יום ההולדת שלו בבית, בלי אף אחד.
khagágnu et yom hahulédet sheló babáyit, bli af ekhád
We had his birthday at home, just us. (the everyday form)
חגונו את יום ההולדת שלו בבית.
khagónu et yom hahulédet sheló babáyit
We celebrated his birthday at home. (the classical geminate past — recognise it, don't say it)
Key Takeaways
- ס־ב־ב fills all seven binyanim — סָבַב, נָסַב, סוֹבֵב and סִיבֵּב, סוֹבַב, הֵסֵב, הוּסַב, הִסְתּוֹבֵב — which makes it the one root that shows the whole class at once.
- The doubling surfaces three ways: both letters written (סוֹבֵב, הִסְתּוֹבֵב, סַבֵּב), one letter with a dagesh (סַבּוֹתִי, נָסַבָּה), or one letter and a long vowel in place of the other (הֵסֵב, הוּסַב, לָסוֹב).
- The third route is shared with hollow roots, because both hand hif'il a two-consonant stem: הֵסֵב / יָסֵב beside הֵקִים / יָקִים. A kamatz prefix means a short stem, not a specific class.
- pi'el takes two routes on the same root: the polel לְסוֹבֵב "turn something" and the ordinary לְסַבֵּב "cause", which are different verbs with different meanings.
- The class is dissolving inside the dictionary entries: Pealim prints לָחוֹג beside לַחְגּוֹג, לָסוֹב beside לִסְבּוֹב, הֲסִיבּוֹתִי beside הֵסַבְתִּי, and הֲקִילּוֹתִי beside הֵקַלְתִּי.
- ס־ב־ב's pa'al lost twice over: it was regularised and then displaced — Israelis use the polel סוֹבֵב and the hitpolel הִסְתּוֹבֵב instead.
- ק־ל־ל has no pa'al verb. קַל is an adjective; the root's verbs are pi'el קִילֵּל and hif'il הֵקֵל, whose huf'al הוּקַל לִי is everyday speech.
- In the hitpa'el the class merges with the hollow roots: הִסְתּוֹבֵב (ס־ב־ב) and הִתְעוֹרֵר, הִתְגּוֹרֵר, הִתְכּוֹנֵן, הִתְלוֹנֵן (ע־ו־ר, ג־ו־ר, כ־ו־ן, ל־ו־ן) are one paradigm on Pealim's polel model — and it is the half of the class a beginner actually uses. In the ן verbs the we form הִתְכּוֹנַנּוּ is spelled like the they form, התכוננו.
- What the class needs from you is recognition, not production: הסתובב, הוקל, מוסב and מסובב are one family.
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- Pa'al Geminate Roots (סבב, תמם, חגג)C1 — Roots whose second and third letters are identical. In Modern Hebrew this is a reading skill rather than a production skill: most of these verbs moved to pi'el and hitpa'el, the survivors were rebuilt on the sound-root pattern, and what is genuinely alive is the vocabulary the roots left behind.
- Israelis Regularise: Spoken Forms That Break the RulesC1 — The gap between the paradigms in a Hebrew grammar and the forms Israelis actually produce is wide, systematic, and always running the same direction — toward fewer distinct forms. Here is each change, with the prescriptive form, the spoken form, and an honest verdict on where each one still lives.
- Weak Roots (גזרות): Why Some Words Look BrokenA2 — קם has two consonants, יפול has lost its נ, and קנה ends in a letter nobody pronounces. None of these verbs is irregular — each belongs to a גזרה, a root class where one weak letter behaves predictably. Here are the classes, the reason a letter goes missing, and where each one is taught in full.
- ע״ו and ע״י (Hollow Roots) Across the BinyanimB2 — A root whose middle letter is ו or י has no middle consonant to build on, so each binyan solves the problem differently: pa'al shows two letters, hif'il inserts a long i, and the pi'el slot is taken over by the polel. Pa'al is also the only binyan that keeps ע״ו and ע״י apart — everywhere else the letter on the page is the mould's, not the root's.