A lexical causative packages causing and the resulting event into one verb. نزل رامي means “Rami went down / got out,” while نزّلت رامي means “I brought Rami down / let him out.” Form II often supplies this extra-causer verb, but Lebanese also uses unrelated pairs such as شاف / فرجى “see / show” and مات / قتل “die / kill.”
The mapping is lexical, not a machine. Doubling a middle radical can signal a familiar causative relation, a narrower conventional action, or a verb with no active Form I partner in everyday speech. Learn both principal parts and the participant frame. The broader Derived Valency page explains how these changes fit the derived-form system.
Focused pair: نزل and نزّل
The less-valent event has one central mover. Form II adds a controller or transporter, and the original mover becomes an affected object.
| Environment | Form I: “go down/get out” | Form II: “bring down/let off” |
|---|---|---|
| 3ms perfect | نزل nizil | نزّل nazzal |
| 1sg perfect | نزلت nzilit | نزّلت nazzalet |
| 3ms b-imperfect | بينزل byinzal | بينزّل byinazzel |
| 3ms bare imperfect | ينزل yinzal | ينزّل yinazzel |
| 2ms command | انزل nzal | نزّل nazzel |
| participants | mover = subject | causer = subject; mover = object |
نزلت نور من السيارة عند أول الشارع.
nizlet Nūr min es-sayyāra ʿind awwal esh-shēreʿ.
Nour got out of the car at the beginning of the street. (informal; mover as subject)
نزلت نور حد أول الشارع.
nazzalet Nūr ḥadd awwal esh-shēreʿ.
I let Nour out near the beginning of the street. (informal; causer subject, Nour affected object)
السواق بينزل الركاب حد المحطة.
es-sawwāʾ byinazzel er-rokkēb ḥadd el-maḥaṭṭa.
The driver lets passengers off by the station. (informal; habitual Form II causative)
Without their different location phrases, both clauses could be written simply نزلت نور in ordinary unvocalized Arabic. Pointing, pronunciation, and participant structure distinguish nizlet Nūr “Nour got out” from nazzalet Nūr “I let Nour out.” This is a real literacy ambiguity, not a reason to insert shadda into normal target text.
Common Form I–II participant shifts
Several high-frequency pairs make the participant change easy to see.
| Less-valent event | Causative Form II | Added role |
|---|---|---|
| فهم حدا الفكرة fihim ḥada l-fekra | فهّم حدا الفكرة fahham ḥada l-fekra | explainer |
| لبس حدا الجاكيت libis ḥada zh-zhākēt | لبّس حدا الجاكيت labbas ḥada zh-zhākēt | dresser |
| نشف الغسيل nishif el-ghasīl | نشّف الغسيل nashshaf el-ghasīl | person or force drying it |
| كبر الخط kibir el-khaṭṭ | كبّر الخط kabbar el-khaṭṭ | person enlarging it |
فهمت رنا الفكرة بعد المثال التاني.
fihmet Rana l-fekra baʿd el-mithēl et-tēne.
Rana understood the idea after the second example. (neutral; experiencer subject)
فهمت رنا الفكرة برسم صغير.
fahhamet Rana l-fekra b-rasem zghīr.
I made the idea clear to Rana with a small diagram. (neutral; explainer subject, experiencer object)
نشفت التياب عالبلكون قبل الضهر.
nishfit et-tyēb ʿal-balkōn ʾabel eḍ-ḍoher.
The clothes dried on the balcony before noon. (informal; changing thing as subject)
نشفت التياب عالسريع قبل ما نفل.
nashshafet et-tyēb ʿas-sarīʿ ʾabel ma nfill.
I dried the clothes quickly before we left. (informal; added causer)
The affected object is not merely an English direct object pasted after a doubled verb. Each Lebanese pair determines whether the original participant becomes direct, whether a second theme can follow, and what conventional meanings the causative has acquired.
Two affected participants and object marking
Some causatives take both a person and a theme. فهّمت رامي الفكرة has an explainer subject, Rami as the affected experiencer, and the idea as theme. لبّست الولد الجاكيت similarly has a dresser, a wearer, and a garment.
لبست البنت الكنزة لأنها بردت.
labbaset el-bint el-kinze laʾanna bardet.
I put the sweater on the girl because she got cold. (informal; wearer object plus garment theme)
فهمتن الخطة خطوة خطوة.
fahhamton el-khiṭṭa khoṭwe khoṭwe.
I explained the plan to them step by step. (neutral; affected people cliticized on the causative)
An object clitic attaches to the causative verb because that verb selects the affected person. English “explain the plan to them” can tempt learners to add لـ, but the established frame here is فهّم حدا شغلة.
Suppletive pairs: causation without shared morphology
Not every semantic causative is a derived form of the same root. Lebanese uses separate lexical verbs for several basic relations.
| Uncaused / lower event | Causative lexical verb | Relation |
|---|---|---|
| شاف shāf, see | فرجى farzha, show | cause someone to see |
| إجا izha, come | جاب zhāb, bring | cause something to come/be present |
| مات māt, die | قتل ʾatal, kill | cause to die |
| عرف ʿirif, know/find out | خبر khabbar, tell/inform | cause someone to know |
شافت ليلى الصور، وبعدين فرجتهن لأختها.
shēfit Layla ṣ-ṣowar, w-baʿdēn farzhithon la-okhta.
Layla saw the photos, then showed them to her sister. (informal; suppletive see/show pair)
إجا الطلب عالعنوان الغلط، والسواق جابه لعنا.
izha ṭ-ṭalab ʿal-ʿonwēn el-ghalaṭ, wis-sawwāʾ zhābo la-ʿinna.
The order arrived at the wrong address, and the driver brought it to us. (informal; come/bring relation)
عرفت بالخبر الصبح، وخبرت أهلي بالليل.
ʿirifet bil-khabar eṣ-ṣobeḥ, w-khabbaret ahle bil-lēl.
I found out the news in the morning and told my family in the evening. (informal; lexical know/tell relation)
English show and bring already use unrelated verbs, so the idea is familiar: causative meaning does not require visible derivational morphology.
Why the mapping is not productive
Form II has causative tendencies, but established vocabulary controls what speakers accept. سكّر is the ordinary verb “close,” not synchronically “make something be sakar.” بلّش means “start,” and رتّب means “arrange.” Conversely, an English causative may require خلّى + bare verb or an unrelated lexical item because no ordinary derived pair expresses the intended relation.
سكر الباب لأن الضجة زادت.
sakkar el-bēb laʾann eḍ-ḍazhzhe zēdet.
He closed the door because the noise increased. (informal; lexical Form II, not a transparent causative pair)
هاد الدوا خلاني نام؛ هالصياغة أوضح من اختراع فعل ما تعلمته.
hād ed-dawa khallāne nēm; haṣ-ṣiyāgha awḍaḥ min ikhtirāʿ fiʿel ma tʿallamto.
This medicine made me sleep; this phrasing is clearer than inventing a verb I haven't learned. (metalinguistic; conservative analytic choice)
The second statement is deliberately conservative: even where related verbs exist with narrower meanings, learners should not coin one to translate every occurrence of English make.
Aspect belongs to the selected verb
Causative meaning does not determine tense or aspect. A habitual causative takes the b-imperfect; an unfolding event uses عم + b-imperfect; a future uses رح + bare imperfect.
كل يوم بينزل ابنه عند المدرسة عالتمانية.
kill yōm byinazzel ibno ʿind el-madrase ʿat-tmēnye.
Every day he drops his son off at school at eight. (informal; habitual causative)
هلق عم بينزل الصناديق عن الشاحنة.
hallaʾ ʿam byinazzel eṣ-ṣanādīʾ ʿan esh-shēḥne.
He's unloading the boxes from the truck now. (informal; ongoing lexical extension)
بكرا رح ينزل التطبيق الجديد.
bokra raḥ yinazzel et-taṭbīʾ el-zhdīd.
Tomorrow he'll download the new app. (informal; future bare Form II and lexical technological sense)
Affirmative and negative minimal pairs
كبرت الخط كرمال جدي يقرا الرسالة.
kabbaret el-khaṭṭ kermēl zhidde yiʾra r-risēle.
I enlarged the font so my grandfather could read the message. (affirmative Form II causative)
ما كبرت الخط لأن جدي قرا الرسالة بلا مشكلة.
ma kabbaret el-khaṭṭ laʾann zhidde ʾara r-risēle bla mishkle.
I didn't enlarge the font because my grandfather read the message without difficulty. (negative causative; doubled stem retained)
Dialogue: who moved whom?
ليش نزلت سارة هون؟
lēsh nizlet Sāra hōn?
Maya: Why did Sara get out here? (Form I; Sara is the mover)
أنا نزلتها هون لأن الطريق مسكر.
ana nazzalta hōn laʾann eṭ-ṭarīʾ msakkar.
Karim: I let her out here because the road is closed. (Form II; Sara is affected object)
طيب، فرجيها عالخريطة وين تروح.
ṭayyeb, farzhīha ʿal-kharīṭa wēn trūḥ.
Maya: Okay, show her on the map where to go. (suppletive causative ‘show’)
Common Mistakes
Keeping the old subject as subject after causativization
❌ رامي نزل السواق حد البيت.
Incorrect for ‘the driver dropped Rami off’ — the new causer must be subject and Rami becomes object.
✅ السواق نزل رامي حد البيت.
es-sawwāʾ nazzal Rāme ḥadd el-bēt.
The driver dropped Rami off by the house.
Using the wrong two-object frame
❌ فهمت الفكرة لرامي قبل الاجتماع.
Incorrect for the intended causative ‘I explained the idea to Rami’ — the affected experiencer is direct in this frame.
✅ فهمت رامي الفكرة بمثال واضح.
fahhamet Rāme l-fekra b-mithēl wāḍeḥ.
I explained the idea to Rami with a clear example.
Assuming every Form II verb is causative
❌ بلش يعني عمل حدا يبلش.
Incorrect — بلّش is simply the ordinary lexical verb ‘start’ in many uses.
✅ بلشنا الاجتماع عالوقت.
ballashna l-izhtimēʿ ʿal-waʾet.
We started the meeting on time.
Inventing a doubled verb from any Form I verb
❌ كل فعل لازم يكون إله فعل سببي عالوزن التاني.
Incorrect — causative pairings have lexical gaps and suppletive verbs.
✅ بتعلم الزوج المستعمل مع معناه وإطاره.
btʿallam ez-zōzh el-mistaʿmal maʿ maʿnē w-iṭāro.
I learn the attested pair together with its meaning and frame.
Key Takeaways
Many Form I–II pairs add a causer and demote the original subject to an affected object: نزل / نزّل، فهم / فهّم، نشف / نشّف. Some basic relations are suppletive: شاف / فرجى، إجا / جاب، مات / قتل. Neither morphology nor an English gloss guarantees a causative partner. Learn verified principal parts, participant roles, and object marking; use خلّى when the intended causation has no established lexical verb.
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Start learning Arabic →Related Topics
- Form II faʿʿalB1 — Recognize the doubled middle radical of Form II and learn its causative, intensive, denominal, and fully lexical Lebanese verbs through principal parts and frames.
- 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.
- 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.
- Analytic Causatives with خلّى and Other VerbsB1 — Build Lebanese let, make, force, allow, and help constructions with an explicit causer, causee, and correctly marked lower predicate.
- Transitive, Intransitive, and Prepositional Verb FramesA2 — Learn whether a Lebanese verb takes a direct object, no object, or a required preposition.
- Relationships among Forms II through VB2 — Recognize how doubling, long vowels, and t-prefixes connect Forms II–V while keeping each Lebanese verb's real meaning and valency lexical.