Forms II–V are often presented as a neat chain: Form II causes or intensifies, Form III involves another participant, Form IV causes, and Form V reflects Form II back onto the subject. Those tendencies are historically important and genuinely helpful—but Lebanese verbs are words, not the output of an equation. علّم means “teach,” رتّب means “arrange,” and سكّر means “close”; their shared Form II shape does not reduce them to one translation.
This page uses urban Beirut principal parts and treats the forms as a network of attested lexical relationships. For full person paradigms, follow the dedicated verb pages; Derived Meaning and Derived Valency extend the contrasts developed here.
The four recognition shapes
| Form | Strong-root cue | Typical perfect / b-nonpast | Frequent tendency |
|---|---|---|---|
| II | C₂ is doubled | علّم / بعلّم ʿallam / bʿallem | cause, make, intensify, repeat; often lexical |
| III | long vowel after C₁ | ساعد / بساعد sāʿad / bsāʿed | engage with, direct action toward, interact; many exceptions |
| IV | أ- in the perfect | أعلن / بيعلن aʿlan / byiʿlen | cause, declare, bring about; comparatively formal/restricted |
| V | ت- plus Form-II-like doubling | تعلّم / بيتعلّم tʿallam / byitʿallam | undergo, acquire, act on oneself; middle/reflexive tendency |
The “strong-root” qualification matters. Weak or geminate radicals can alter the visible shape. Even with an ordinary root, the pattern does not supply a complete paradigm or an English gloss.
These relationships presuppose an attested inherited family. A three-consonant sequence is not automatically a productive root, and a recent loan such as كنسل “cancel” should not be forced into Forms II–V merely because a classical-looking analysis can be imagined.
Form II: doubling often changes valency
Form II's clearest cue is a doubled middle radical. With some roots, it adds a causer or controller. Compare Form I درس daras “studied” with Form II درّس darras “taught”: the learner is subject in the first, while the teacher is subject in the second.
درست عربي سنتين ببيروت.
daraset ʿarabe santēn b-Bayrūt.
I studied Arabic for two years in Beirut. (informal; Form I, learner as subject)
مايا درستني قواعد اللفظ اللبناني.
Māya darrasitne ʾwēʿed el-lafeẓ el-libnēne.
Maya taught me the rules of Lebanese pronunciation. (informal; Form II, teacher as subject and learner as object)
But doubling does not always mean “make someone do Form I.” رتّب means “arrange/tidy,” and سكّر is the ordinary colloquial verb “close.” Learn those meanings directly.
رتبت المكتب وسكرت الباب قبل ما فل.
rattabet el-maktab w-sakkaret el-bēb ʾabl ma fell.
I tidied the office and closed the door before leaving. (informal; two lexical Form II verbs)
Form III: participation is a tendency, not a promise
Form III commonly has a long vowel after the first radical. Many verbs direct an activity toward another participant: ساعد “help,” حاور “discuss with,” رافق “accompany.” This makes the old “interaction” label memorable.
ساعدني حمل الصناديق عالسيارة.
sāʿadne ḥammel eṣ-ṣanādīʾ ʿas-sayyāra.
Help me load the boxes into the car. (informal; Form III directed toward another person)
رافقتها عالمستشفى لأنها كانت خايفة.
rāfaʾta ʿal-mistashfa laʾanna kēnit khāyfe.
I accompanied her to the hospital because she was afraid. (informal; Form III with companion object)
Yet unrelated ساعد “help” and سافر “travel” share the Form III shape, while سافر is not reciprocal and need not take a partner object.
سافر عفرنسا أسبوع ورجع مبارح.
sāfar ʿa-Fransa usbūʿ w-rizheʿ mbēriḥ.
He traveled to France for a week and returned yesterday. (informal; lexical Form III without reciprocity)
The two roots share morphology, not argument structure. This is exactly why a form must be learned with its complements.
Form IV: real, restricted, and often register-sensitive
Form IV has an initial أ- in the perfect of strong verbs and often a causative or declarative history. It is less productive in spontaneous Lebanese than Forms II and V, but several verbs are established in news, institutions, and professional speech: أعلن “announce,” أقنع “convince,” أثبت “prove.” Some are entirely normal in conversation when the topic calls for them.
أعلنت الشركة عن الموعد الجديد بالإيميل.
aʿlanet esh-sharike ʿan el-mawʿed el-zhdīd bil-īmēl.
The company announced the new date by email. (professional/news-like; Form IV)
أقنعته ينطر لبكرا قبل ما يقرر.
aʾnaʿto yinṭor la-bokra ʾabl ma yʾarrer.
I convinced him to wait until tomorrow before deciding. (neutral conversation; Form IV)
Do not reject a Form IV verb as “MSA” merely because it occurs in formal Arabic. Instead, learn its Lebanese pronunciation and realistic domain. Conversely, do not manufacture new Form IV verbs because a formal dictionary lists a related root.
Form V: the t-prefixed partner of Form II
Form V combines ت- with the doubled-middle shape associated with Form II. A frequent relationship is causative versus acquisition/middle: علّم “teach” versus تعلّم “learn,” or غيّر “change something” versus تغيّر “change/become different.”
علمته يكتب اسمه بالعربي.
ʿallamto yiktob ismo bil-ʿarabe.
I taught him to write his name in Arabic. (informal; Form II with learner object)
تعلم يكتب اسمه بأول أسبوع.
tʿallam yiktob ismo b-awwal usbūʿ.
He learned to write his name in the first week. (informal; Form V with learner subject)
غيرنا الخطة لأن الوضع تغير.
ghayyarna l-khiṭṭa laʾann el-waḍeʿ tghayyar.
We changed the plan because the situation changed. (neutral; Form II transitive versus Form V inchoative)
The relationship is not always a literal reflexive. تذكّر means “remember,” not “remind oneself” in every use; تأخّر means “be late,” not an act deliberately performed on oneself.
One family map: ع–ل–م
| Form/word | Urban reading | Meaning | Valency/register |
|---|---|---|---|
| علم | ʿelem | knowledge, science | noun; often specialized/formal compounds |
| علّم / بعلّم | ʿallam / bʿallem | teach | teacher subject; learner object |
| تعلّم / بيتعلّم | tʿallam / byitʿallam | learn | learner subject |
| أعلم / بيعلم | aʿlam / byiʿlem | inform | (formal/administrative); colloquial خبر is often preferred |
| معلّم | mʿallem | teacher, skilled master | noun; also familiar address in some settings |
The map makes a relationship visible but also records register. Knowing أعلم exists does not make it the neutral choice in a chat; خبرني “tell me/let me know” is usually more conversational.
A dialogue: who teaches, who learns?
مين علمك تعمل قهوة هيك؟
mīn ʿallamak taʿmel ʾahwe hēk?
Rana: Who taught you to make coffee like this? (informal; Form II with teacher subject and learner object)
تعلمت لحالي، من فيديوهات عالإنترنت.
tʿallamet la-ḥāle, min vīdyohāt ʿal-internet.
Sami: I learned by myself, from videos online. (informal; Form V learner subject)
وبالتقرير منقول أعلمنا الزبون، ولا خبرنا الزبون؟
w-bit-taʾrīr mnʾūl aʿlamna z-zabūn, walla khabbarna z-zabūn?
Rana: And in the report, do we say ‘we informed the client’ or ‘we told the client’? (professional register contrast)
بالتقرير أعلمنا أضبط؛ بالحكي العادي خبرنا أريح.
bit-taʾrīr aʿlamna aḍbaṭ; bil-ḥake l-ʿāde khabbarna aryaḥ.
Sami: In the report ‘informed’ is more precise; in ordinary speech ‘told’ is more natural. (professional versus informal)
Common Mistakes
Treating Form II as simple emphasis
❌ درس ودرس معناتن نفس الشي، بس التاني أقوى.
Incorrect—درّس means ‘teach’ and changes the participant roles.
✅ درست عربي، وبعدين درست طلاب مبتدئين.
daraset ʿarabe, w-baʿdēn darraset ṭollēb mobtadʾīn.
I studied Arabic, then taught beginning students. (Form I versus Form II)
Assuming every Form III is reciprocal
❌ سافر يعني شخصين سافروا مع بعض.
Incorrect—سافر simply means ‘travel’; reciprocity is not automatic.
✅ سافر لحاله ورجع بعد أسبوع.
sāfar la-ḥālo w-rizheʿ baʿd usbūʿ.
He traveled alone and came back after a week. (informal)
Using Form V as a mechanical passive
❌ كل فعل خامس يعني انعمل من حدا.
Incorrect—Form V includes middle, acquisition, experiential, and lexical meanings.
✅ تذكر الموعد فجأة.
tzakkar el-mawʿed fazhʾa.
He suddenly remembered the appointment. (Form V experiential meaning)
Inventing a form from an English translation
❌ بختار وزن سببي وبحط فيه أي جذر.
Incorrect—a plausible pattern does not prove that Lebanese has that verb.
✅ بتأكد من الفعل وتصريفه وإطاره قبل ما استعمله.
btaʾakkad min el-fiʿel w-taṣrīfo w-iṭāro ʾabl ma staʿmelo.
I verify the verb, its conjugation, and its frame before using it. (neutral)
Key Takeaways
Form II doubles the middle radical and often changes valency; Form III often directs action toward another participant; Form IV is real but comparatively restricted and register-sensitive; Form V adds a t-prefix to a Form-II-like shape and frequently gives a middle or acquisition meaning. Each of those is a tendency. The reliable unit is still an attested perfect–nonpast pair plus its meaning, complements, and register.
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- The Derived-Verb System as a Lexical MapB1 — Use Forms I–X to recognize Lebanese verb families without assuming that a pattern guarantees a meaning or even an existing verb.
- Form I Stem-Vowel ClassesB1 — Learn Lebanese Form I verbs as perfect–nonpast principal-part pairs, with realistic limits on predicting their internal vowels.
- Relationships among Forms VI through XB2 — Recognize the reciprocal, middle, color-state, and ist-prefix families of Lebanese verbs while respecting sound changes and lexical gaps.
- Why Derived Forms Do Not Have One MeaningB2 — Learn to treat Arabic verb forms as lexical families whose tendencies must be checked against each verb's actual Lebanese meaning and frame.
- Derived Forms and Changes in ValencyC1 — See how Lebanese derived verbs add, suppress, or reorganize participants—and why every resulting frame must still be learned lexically.
- Form V tfaʿʿalB1 — Recognize the Lebanese t-plus-doubling shape of Form V and learn its acquisition, middle, result, and lexical meanings with their real frames.