Form IV historically has an initial أ- in the perfect of strong roots. In present-day urban Lebanese, its inventory is smaller and less freely productive than Forms II or V. Some members are ordinary core vocabulary, especially weak أعطى / بيعطي “give”; others, such as أعلن “announce” and ألغى “cancel,” are common in professional, institutional, or media topics.
That distribution demands two corrections to textbook shortcuts. Form IV does not always mean “formal,” and it does not automatically mean “make someone do Form I.” Each surviving verb has its own Lebanese pronunciation, register, principal parts, and complement frame.
A focused strong-root paradigm with أعلن
أعلن / بيعلن “announce” is a clear strong-root Form IV verb used in mixed Lebanese news and professional speech. The initial perfect vowel is absent from the imperfect stem.
| Part | Form | Romanization | Use |
|---|---|---|---|
| 3ms perfect | أعلن | aʿlan | he announced |
| 3fs perfect | أعلنت | aʿlanet | she announced |
| 3ms b-imperfect | بيعلن | byiʿlen | he announces |
| 3ms bare imperfect | يعلن | yiʿlen | after رح, modals, and other licensors |
| 2ms imperative | اعلن | aʿlen | announce! (professional/institutional) |
| common noun | إعلان | iʿlēn | announcement, advertisement |
| frame | أعلن عن شغلة | aʿlan ʿan shaghle | announce something |
الجامعة أعلنت عن مشروع جديد بالإيميل.
el-zhēmʿa aʿlanet ʿan mashrūʿ zhdīd bil-īmēl.
The university announced a new project by email. (mixed professional Lebanese)
عادة بيعلنوا النتيجة آخر النهار.
ʿāde byiʿlno n-natīzhe ākhir en-nahār.
They usually announce the result at the end of the day. (professional spoken Lebanese; habitual b-imperfect)
The b-imperfect is Lebanese بيعلن, not a fully inflected MSA imperfect with mood and case endings elsewhere in the sentence. A speaker can use this lexical verb inside a Lebanese clause without switching the whole utterance to MSA.
The actual inventory spans registers
The most useful Form IV verbs do not occupy one social register. This is one reason the broader derived-meaning guide treats form meanings as tendencies rather than definitions.
| Principal pair | Meaning | Typical register/domain |
|---|---|---|
| أعطى / بيعطي aʿṭa / byiʿṭe | give | everyday core vocabulary |
| أقنع / بيقنع aʾnaʿ / byiʾnaʿ | convince | neutral conversation and professional speech |
| أعلن / بيعلن aʿlan / byiʿlen | announce | professional, institutional, media |
| ألغى / بيلغي algha / byilghe | cancel | neutral/professional planning |
| أعلم / بيعلم aʿlam / byiʿlem | inform | formal/administrative; everyday خبر is often preferred |
عطاني المفتاح وقاللي رجعلي ياه بكرا.
ʿaṭāne l-miftēḥ w-ʾālle razhzheʿle yēh bokra.
He gave me the key and told me to give it back tomorrow. (informal; everyday weak Form IV)
أقنعته يبعت الطلب اليوم بدل ما ينطر للجمعة.
aʾnaʿto yibʿat eṭ-ṭalab el-yōm badal ma yinṭor lil-zhomʿa.
I convinced him to send the application today instead of waiting until Friday. (neutral conversation)
ألغوا الموعد لأنو الطريق كانت مسكرة.
algho l-mawʿed laʾanno ṭ-ṭarīʾ kēnet msakkara.
They canceled the appointment because the road was closed. (neutral/professional planning)
The everyday status of أعطى proves that historical form number and current register are separate facts. Its weak stem also proves that the neat ʾafʿal label cannot generate every surface form.
Causative history does not guarantee a live pair
Form IV has an important causative history, and أقنع “convince” clearly introduces a person whose judgment changes. Yet learners cannot take any Form I verb and add initial أ- to create “make X happen.” The corresponding Lebanese causative may be Form II, lexical, or absent.
| Desired meaning | Beirut production baseline | Contrast |
|---|---|---|
| make someone understand | فهّم حدا | Form II, not invented Form IV |
| drive/deliver someone | وصّل حدا | Form II is the course baseline |
| tell/inform someone | خبّر حدا | Form II in everyday conversation |
| close something | سكّر شي | lexical Form II; formal أغلق belongs elsewhere |
فهمني الفكرة بمثال بسيط.
fahhemne l-fikra b-mithēl basīṭ.
Make me understand the idea with a simple example. (informal; Form II rather than manufactured Form IV)
وصلني السواق عالبيت بعد نص الليل.
waṣṣalne s-sawwāʾ ʿal-bēt baʿd noṣṣ el-lēl.
The driver took me home after midnight. (informal; Form II causative in the Beirut baseline)
Other Levantine communities and careful speakers may prefer a Form IV cognate in a particular lexical item (regional/style variation). That does not justify blending all alternatives into one production paradigm. Learn the local lexical choice.
Form II and Form IV can coexist with different meanings
Pattern competition is not always a choice between synonyms. علّم means “teach,” while administrative أعلم means “inform.” They organize different participants and different social settings.
المعلمة علمتني عربي بالمدرسة.
el-mʿallme ʿallamitne ʿarabe bil-madrase.
The teacher taught me Arabic at school. (informal; Form II teach)
أعلمنا الزبون بالتغيير بإيميل رسمي.
aʿlamna z-zabūn bit-taghīr b-īmēl rasme.
We informed the client of the change in a formal email. (formal/administrative lexical choice)
The second sentence deliberately has a formal administrative flavor. In ordinary conversation, خبرنا الزبون عن التغيير is more natural. Register is part of lexical knowledge, not a reason to call one sentence grammatically superior.
An initial alif does not prove Form IV
Everyday أكل / بياكل “eat,” أخد / بياخد “take,” and irregular إجا / بيجي “come” begin with alif or hamza in the perfect spelling, but they are not productive strong Form IV paradigms. Their imperfects and principal parts reveal different histories.
أكل قبل ما ياخد الدوا.
akal ʾabl ma yēkhod ed-dawa.
He ate before taking the medicine. (informal; two frequent Form I verbs, not Form IV)
Classify a verb from the complete principal-part family, not from the first written character. This is especially important in an unvocalized script, where several morphological histories can look deceptively similar.
Aspect and negation remain Lebanese
Form IV participates in the same aspect system as other verbs: perfect for bounded events, b-imperfect for habits or current states, عم + b-imperfect for an ongoing event when appropriate, and a bare imperfect after رح or a modal.
أعلنت الشركة النتيجة اليوم.
aʿlanet esh-sharike n-natīzhe l-yōm.
The company announced the result today. (affirmative perfect)
ما أعلنت الشركة النتيجة اليوم.
ma aʿlanet esh-sharike n-natīzhe l-yōm.
The company didn't announce the result today. (negative perfect)
رح يعلنوا الموعد بكرا.
raḥ yiʿlno l-mawʿed bokra.
They'll announce the date tomorrow. (future marker plus bare Form IV)
ما رح يعلنوا الموعد قبل الاجتماع.
ma raḥ yiʿlno l-mawʿed ʾabl el-izhtimēʿ.
They won't announce the date before the meeting. (negative future)
No MSA subjunctive or jussive ending appears after رح. The bare Lebanese stem already fits the construction.
A workplace register dialogue
الشركة أعلنت عن التغيير، ولا بعد؟
esh-sharike aʿlanet ʿan et-taghīr, walla baʿd?
Maya: Has the company announced the change yet? (professional spoken Lebanese)
بعد. رح يعلنوا عنه بعد الاجتماع.
baʿd. raḥ yiʿlno ʿanno baʿd el-izhtimēʿ.
Rami: Not yet. They'll announce it after the meeting. (future bare Form IV)
ولما نحكي مع الفريق، منقول أعلنوا ولا خبرونا؟
w-lamma niḥke maʿ el-farīʾ, mnʾūl aʿlano walla khabbarūna?
Maya: And when we talk with the team, do we say ‘they announced’ or ‘they told us’? (register choice)
خبرونا أريح بالحكي، وأعلنوا أدق بالتقرير.
khabbarūna aryaḥ bil-ḥake, w-aʿlano adaʾ bit-taʾrīr.
Rami: ‘They told us’ is more natural in conversation, and ‘they announced’ is more precise in the report. (informal versus professional wording)
Common Mistakes
Treating every initial أ as Form IV
❌ أكل وزن رابع بس لأنه بيبلش بألف.
Incorrect — the full principal parts أكل / بياكل identify a frequent Form I verb.
✅ بحفظ أكل وبياكل سوا قبل ما صنف الفعل.
baḥfaẓ akal w-byēkol sawa ʾabl ma ṣannef el-fiʿel.
I memorize akal and byēkol together before I classify the verb. (neutral learning strategy)
Calling all Form IV verbs formal
❌ أعطى ما بينقال بالحكي اليومي لأنه وزن رابع.
Incorrect — أعطى is core everyday Lebanese vocabulary.
✅ عطاني قهوة وقاللي تفضل.
ʿaṭāne ʾahwe w-ʾālle tfaḍḍal.
He gave me coffee and said, ‘Here you go.’ (informal)
Manufacturing a causative with أ-
❌ بحط ألف قبل أي فعل كرمال اعمل منه سببي.
Incorrect — a historical tendency does not license new verbs freely.
✅ بقول فهمني ووصلني لأن هيدي الأفعال المستعملة.
bʾūl fahhemne w-waṣṣelne laʾann hayde l-afʿāl el-mistaʿmale.
I say fahhemne and waṣṣelne because those are the verbs actually used. (informal metalinguistic explanation)
Using administrative wording in an intimate chat
❌ أعلمتك إني رح اتأخر يا حبيبي.
Register mismatch — أعلمتك sounds administrative in this intimate message.
✅ خبرتك إني رح اتأخر يا حبيبي.
khabbartek inne raḥ itʾakhkhar ya ḥabībe.
I told you I was going to be late, darling. (informal intimate)
Adding b- after رح
❌ رح بيعلنوا النتيجة بكرا.
Incorrect in the Beirut baseline — رح selects a bare agreeing verb.
✅ رح يعلنوا النتيجة بكرا.
raḥ yiʿlno n-natīzhe bokra.
They'll announce the result tomorrow. (future bare Form IV)
Key Takeaways
Form IV is a limited but real part of Lebanese. Strong verbs show initial أ- in the perfect and lose that prefix in the imperfect, while weak أعطى has its own high-frequency paradigm. Some members are everyday, some neutral, and some institutional. Learn each perfect–imperfect pair, complement frame, and register; do not identify the form from initial alif alone or create causatives by rule when Beirut uses Form II or another lexical verb.
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