فعَل

Form One: The Plain Verb

Level 3

Form I (الوزن الأول) is the simplest verb shape in Arabic, consisting of a three-letter root. It represents the basic, unaugmented meaning of the root (e.g., 'writing', 'going', 'sitting').

How It Works

Form I is known as al-fi'l al-mujarrad (الفعل المجرد), meaning the 'bare' or 'stripped' verb. It is the most frequent form in Arabic.

1. The Middle Vowel ('Ayn)
Unlike derived forms (II-X), the middle vowel of Form I is not fixed and must be learned for each verb. In the past tense:

  • فَعَلَ (fa'ala): The most common. It can be transitive (e.g., كَتَبَ 'he wrote') or intransitive (e.g., جَلَسَ 'he sat', ذَهَبَ 'he went').
  • فَعِلَ (fa'ila): Often denotes temporary states or emotions. It can be transitive (e.g., شَرِبَ 'he drank') or intransitive (e.g., فَرِحَ 'he was happy').
  • فَعُلَ (fa'ula): Denotes permanent qualities or inherent traits and is always intransitive (e.g., كَبُرَ 'he grew/was big').

2. The Present Tense Vowel
The middle vowel in the present tense is also variable (u, i, or a). Traditionally, these are categorized into 'Six Chapters' (الأبواب الستة) based on the past-to-present vowel shift. There are several key rules:

  • Verbs of the فَعُلَ pattern always take a damma (u) in the present (يَفْعُلُ).
  • Verbs of the فَعِلَ pattern usually take a fatha (a) in the present (يَفْعَلُ).
  • For verbs of the فَعَلَ pattern without guttural letters, the present vowel (u or i) is unpredictable and must be memorized (e.g., كَتَبَ / يَكْتُبُ vs. جَلَسَ / يَجْلِسُ).
  • If the second or third root letter of a فَعَلَ verb is a 'guttural' (ء، هـ، ع، ح، غ، خ), the present vowel is often 'a' (e.g., فَتَحَ / يَفْتَحُ).
  • For assimilated verbs starting with Waw (و), the Waw is dropped in the present if the vowel is a kasra (i) (e.g., وَعَدَ / يَعِدُ) or if the vowel is a fatha (a) due to a guttural root letter (e.g., وَضَعَ / يَضَعُ). However, the Waw is retained if the present vowel is a fatha (a) because the past tense was فَعِلَ (e.g., وَجِلَ / يَوْجَلُ).

3. Participles
Sound transitive Form I verbs commonly use the following patterns. Weak roots adjust them, and intransitive qualities may instead use adjectival patterns such as كَرِيم from كَرُمَ:

  • The Active Participle follows the pattern فَاعِل (e.g., كَاتِب 'writer').
  • The Passive Participle follows the pattern مَفْعُول (e.g., مَكْتُوب 'written').

4. Passive Voice and Verbal Noun
The passive voice for sound Form I roots follows فُعِلَ in the past and يُفْعَلُ in the present. However, the verbal noun is irregular and must be memorized for each verb (e.g., دُخُول، كِتَابَة، قِرَاءَة).

5. Imperative: Start from the second-person jussive and remove تـ: تَكْتُبْ → اُكْتُبْ, تَجْلِسْ → اِجْلِسْ, تَفْتَحْ → اِفْتَحْ. Add hamzat al-wasl when the remaining stem starts with a consonant carrying sukun. Its vowel is u with an original present stem u, otherwise i. Weak roots need their actual jussive stem: تَقُلْ → قُلْ, تَرْمِ → اِرْمِ, تَقِفْ → قِفْ. Common commands كُلْ and خُذْ have additional hamza loss. See the imperative for agreement endings.

Examples (4)

  1. كَتَبَ الطَّالِبُ الرِّسَالَةَ.

    The student wrote the letter.

    Word by Word: Wrote the student the letter.

    A standard active Form I verb (faʿala) where the action is transitive.

  2. شَرِبَ الرَّجُلُ المَاءَ.

    The man drank the water.

    Word by Word: Drank the man the water.

    A Form I verb with a kasra (faʿila), often used for bodily functions or temporary states.

  3. كَبُرَ الوَلَدُ سَرِيعاً.

    The boy grew up quickly.

    Word by Word: Grew big the boy quickly.

    A Form I verb with a damma (faʿula), indicating a change in state or an inherent quality.

  4. يَذْهَبُ مُحَمَّدٌ إِلَى المَدْرَسَةِ.

    Muhammad goes to the school.

    Word by Word: Goes Muhammad to the school.

    The present tense of the Form I verb ذَهَبَ. Note the middle vowel 'a' in the present tense.

Common Mistakes

  • Assuming the present tense middle vowel is always the same.

    يَكْتَبُ (yaktabu)
    يَكْتُبُ (yaktubu)

    Learners often assume all Form I verbs use 'a' in the present. You must check a dictionary for the specific vowel (u, i, or a) for each verb.

  • Treating the ordinary Form I verbal noun as if it used Form IV إفعال.

    أُحِبُّ إِكْتَابَ الرَّسَائِلِ.
    أُحِبُّ كِتَابَةَ الرَّسَائِلِ.

    For the ordinary act of writing, use كتابة. The dictionary also records كَتْب and كِتاب as verbal nouns, so كَتْب is not a grammatical error. إكتاب belongs to a different derived pattern and does not simply replace the Form I verbal noun.

How It Connects

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فعَلLevel 3Form One: The Plain Verb

Learn This First

To understand Form One (الوزن الأول), you first need to understand the Arabic root system (الجذر والوزن) and how verbs are generally structured in the past tense. This pattern serves as the foundational 'template' for all other verb forms.

Learn Next

Patterns that build on this one.