تفاعَل

Form Six: Doing It to Each Other

Level 3

Form VI is characterized by the prefix ta- (تـ) and a long alif (ا) after the first root letter. It usually describes actions that are mutual or gradual.

How It Works

Form VI is one of the most distinct shapes in the Arabic verb system. It is built by adding a تـ prefix to the Form III stem.

1. Reciprocity (المشاركة): This is its most common use. While Form III implies one person acting on another, Form VI implies two or more parties acting together. For example, kātaba (Form III) means 'he wrote to someone,' but takātaba (Form VI) means 'they corresponded with each other.'

2. Reflexive Result (المطاوعة): Form VI can represent the result of a Form III action. For example, from bāʿada (to put distance between), we get tabāʿada (to move away/distance oneself).

3. Pretense (التظاهر): It is used to express pretending to be in a state. For example, from the root for 'sick' (م-ر-ض), we get tamāraḍa (he pretended to be sick).

4. Gradualness (التدرج): It can describe a process happening bit-by-bit, such as tazāyada (to increase gradually).

5. Succession (التتابع): It describes actions occurring one after another in a sequence, such as tasāqaṭa (to fall down in succession, like leaves or snow).

Morphology:
• Verbal Noun: Follows the pattern tafāʿul (تَفَاعُل), such as taʿāwun (cooperation).
• Active Participle: Follows the pattern mutafāʿil (مُتَفَاعِل).
• Passive Participle: Follows the pattern mutafāʿal (مُتَفَاعَل).
• Note on the Passive: While the passive voice exists in theory for Form VI, it is extremely rare in practice and almost never used in modern writing.

Grammatical Note: While many reciprocal verbs are intransitive, transitive usage is common for verbs involving exchange or sharing, such as tabādala (to exchange) or taqāsama (to share). In the present tense, the stem vowel is always a fatha (a), which distinguishes it from Form III.

Examples (4)

  1. تَعَاوَنَ الجِيرَانُ في تَنْظِيفِ الشَّارِعِ.

    The neighbors cooperated in cleaning the street.

    Word by Word: Cooperated the neighbors in cleaning the street.

    The verb تَعَاوَنَ (from the root ع-و-ن 'help') shows mutual cooperation between multiple people.

  2. تَبَادَلَ الطُّلابُ الكُتُبَ بَعْدَ الاِمْتِحَانِ.

    The students exchanged books after the exam.

    Word by Word: Exchanged the students the books after the exam.

    تَبَادَلَ (from ب-د-ل 'change') indicates a reciprocal exchange between the students.

  3. تَظَاهَرَ الرَّجُلُ بِالنَّوْمِ.

    The man pretended to be asleep.

    Word by Word: Pretended the man with the sleep.

    تَظَاهَرَ (from ظ-ه-ر 'appear') here means to make something appear to be true when it is not (pretending).

  4. تَضَاءَلَ الأَمَلُ في العُثُورِ عَلَيْهِمْ.

    Hope of finding them dwindled.

    Word by Word: Dwindled the hope in the finding on them.

    تَضَاءَلَ shows a gradual process of shrinking or decreasing over time.

Common Mistakes

  • Using a kasra instead of a fatha in the present tense.

    يَتَعَاوِنُ النَّاسُ
    يَتَعَاوَنُ النَّاسُ

    Learners often confuse Form VI with Form III. In Form VI, the vowel on the second-to-last letter is always a fatha (a) in the present tense: yatafāʿalu.

  • Using a direct object with purely reciprocal verbs.

    تَعَاوَنَ الطُّلابُ المَشْرُوعَ
    تَعَاوَنَ الطُّلابُ في المَشْرُوعِ

    Most Form VI verbs are intransitive. You usually need a preposition like 'in' (fī) or 'with' (ma'a) rather than a direct object.

How It Connects

Tap a pattern to see what it builds on and what it leads to.

تفاعَلLevel 3Form Six: Doing It to Each Other

Learn This First

To understand Form Six (تفاعَل), you must first be comfortable with the Arabic root and pattern system. It is also helpful to understand Form Three (فاعَل), as Form Six is its reciprocal counterpart, and Form Five (تفعّل), which introduces the prefix 'ta-' used to modify the verb's meaning.