Derived Hollow Wāw and Yāʾ Verbs: Short Paradigms and Morphological Reasoning

1. Derived Hollow Verbs: The Scope

A hollow verb has wāw or yāʾ as its middle root consonant. When additional morphological letters enter a root, both the pattern and the surface representation of that weak letter may change. The chapter provides eight cases grouped under four derived forms:

Word / formMeaning / explanation
Form IV (أَفْعَلَ)أَقَامَ and أَطَارَ.
Form X (اِسْتَفْعَلَ)اِسْتَعَانَ and اِسْتَعَارَ.
Form VIII (اِفْتَعَلَ)اِجْتَابَ and اِخْتَارَ.
Form VII (اِنْفَعَلَ)اِنْقَادَ and اِنْقَاضَ.

Understanding requires linking the root, perfect, imperfect, verbal noun and derivatives—not merely counting added letters.

2. Form IV and the Initial Hamzah

Form IV begins with hamzat al-qaṭʿ. A regular strong-root model is أَفْعَلَ يُفْعِلُ إِفْعَالًا, but the middle weak consonant changes the observable pattern in hollow verbs.
أَقَامَ — يُقِيمُ — إِقَامَةٌ
أَطَارَ — يُطِيرُ — إِطَارَةٌ
Both perfect stems show a medial alif, although the first root is wāw-based and the second is yāʾ-based. The final tāʾ marbūṭah in these verbal nouns belongs to these particular weak-derived formations, not to every Form-IV verbal noun.

3. Aqāma: The Complete Short Paradigm

The root of أَقَامَ is ق و م. Used transitively, it means “to establish or set upright,” so both active and passive forms are relevant.

CategoryForm
Active perfectأَقَامَ
Active imperfectيُقِيمُ
Verbal nounإِقَامَةٌ
Active participleمُقِيمٌ
Passive perfectأُقِيمَ
Passive imperfectيُقَامُ
Passive participleمُقَامٌ
Direct imperativeأَقِمْ
Prohibitionلَا تُقِمْ

مُقِيمٌ designates the doer; مُقَامٌ designates what is established. Their shared root does not make them the same participial category.

4. Why Aqāma Changes Its Middle Letter

The middle root consonant of Form IV is originally wāw here, but it appears as long ā in أَقَامَ. The active imperfect يُقِيمُ has long ī, whereas the passive imperfect يُقَامُ has long ā.
أَقَامَ ↔ يُقِيمُ ↔ يُقَامُ
All three are derived from ق و م. The letters visible in a single written form are therefore not a safe substitute for root analysis. The verbal noun إِقَامَةٌ also belongs to this same root and morphological form.

5. Aṭāra: Form IV of a Hollow-Yāʾ Root

أَطَارَ means “to make something fly,” from the hollow-yāʾ root ط ي ر. In contrast, طَارَ means “to fly.” Thus the derived Form IV may change a verb's transitivity as well as its form.

CategoryForm
Active perfectأَطَارَ
Active imperfectيُطِيرُ
Verbal nounإِطَارَةٌ
Active participleمُطِيرٌ
Passive perfectأُطِيرَ
Passive imperfectيُطَارُ
Passive participleمُطَارٌ
Imperativeأَطِرْ
Prohibitionلَا تُطِرْ

مُطِيرٌ denotes the agent causing flight; مُطَارٌ denotes what was made to fly.

6. Form X: The Istifʿāl Pattern

Form X normally adds the initial sequence ا-س-ت to a triliteral root. A regular reference pattern is اِسْتَفْعَلَ يَسْتَفْعِلُ اِسْتِفْعَالًا, but a hollow middle consonant causes changes in the observable forms.
اِسْتَعَانَ — يَسْتَعِينُ — اِسْتِعَانَةٌ
اِسْتَعَارَ — يَسْتَعِيرُ — اِسْتِعَارَةٌ
These hollow verbal nouns also end with tāʾ marbūṭah. That ending is part of the attested morphological formation here rather than an arbitrary feminine label.

7. Istaʿāna: Seeking Assistance

The root of اِسْتَعَانَ is ع و ن, and the verb means “to seek help.” Its verbal noun is اِسْتِعَانَةٌ.

CategoryForm
Active perfectاِسْتَعَانَ
Active imperfectيَسْتَعِينُ
Verbal nounاِسْتِعَانَةٌ
Active participleمُسْتَعِينٌ
Passive perfectاُسْتُعِينَ
Passive imperfectيُسْتَعَانُ
Passive participleمُسْتَعَانٌ
Imperativeاِسْتَعِنْ
Prohibitionلَا تَسْتَعِنْ

مُسْتَعِينٌ means the person seeking help, whereas مُسْتَعَانٌ refers to the one from whom help is sought. The same event is viewed from different grammatical roles.

8. Why the Imperative Is Istaʿin

To derive a direct imperative from يَسْتَعِينُ, the imperfect prefix is removed and the form becomes jussive. With this hollow stem, the long medial vowel contracts before the resulting consonantal closure: اِسْتَعِنْ.
يَسْتَعِينُ → اِسْتَعِنْ
تَسْتَعِينُ → لَا تَسْتَعِنْ
By contrast, يَسْتَعِينُ is the ordinary indicative imperfect. Copying it unchanged as a command or prohibition would ignore the relevant inflection and hollow-verb alteration.

9. Istaʿāra: Borrowing

اِسْتَعَارَ means “to borrow.” Its root is ع و ر, with the middle wāw surfacing as ā or ī in these derived forms.

CategoryForm
Active perfectاِسْتَعَارَ
Active imperfectيَسْتَعِيرُ
Verbal nounاِسْتِعَارَةٌ
Active participleمُسْتَعِيرٌ
Passive perfectاُسْتُعِيرَ
Passive imperfectيُسْتَعَارُ
Passive participleمُسْتَعَارٌ
Imperativeاِسْتَعِرْ
Prohibitionلَا تَسْتَعِرْ

مُسْتَعِيرٌ designates the borrower; مُسْتَعَارٌ designates the borrowed item.

10. Two Form-X Roots Compared

Although both verbs belong to Form X, their roots and meanings differ.

FeatureIstaʿānaIstaʿāra
Rootع و نع و ر
MeaningSeek helpBorrow
Imperfectيَسْتَعِينُيَسْتَعِيرُ
Active participleمُسْتَعِينٌمُسْتَعِيرٌ
Imperativeاِسْتَعِنْاِسْتَعِرْ

اِسْتَعِنْ means “seek help”; اِسْتَعِرْ means “borrow.” Their derived pattern and weak-letter treatment are similar, but the final root consonant is nūn in one and rāʾ in the other.

11. Form VIII: The Infix Tāʾ

The Form-VIII template اِفْتَعَلَ يَفْتَعِلُ اِفْتِعَالًا places an additional tāʾ after the first root consonant. When the middle root consonant is wāw or yāʾ, further hollow-verb alterations appear in the perfect and verbal noun.
اِجْتَابَ — يَجْتَابُ — اِجْتِيَابًا
اِخْتَارَ — يَخْتَارُ — اِخْتِيَارًا
The two perfect stems have long ā, but their roots differ: wāw in the first, yāʾ in the second. The ī of the verbal noun is a morphological result, not proof of a newly unrelated root.

12. Ijtāba: Hollow-Wāw Form VIII

The root of اِجْتَابَ is ج و ب. Here it conveys traversing a forest or stretch of land. The additional tāʾ of Form VIII does not change the number of original root consonants.

CategoryForm
Active perfectاِجْتَابَ
Active imperfectيَجْتَابُ
Verbal nounاِجْتِيَابٌ
Active participleمُجْتَابٌ
Imperativeاِجْتَبْ
Prohibitionلَا تَجْتَبْ

In اِجْتَبْ, the long medial vowel contracts. The infixed tāʾ remains while the hollow stem undergoes a separate weak-letter alteration.

13. Ijtāba: Active and Passive Relations

The subject of active اِجْتَابَ traverses a route. In the passive, the action is predicated of what is traversed.
اِجْتَابَ يَجْتَابُ — someone traversed / traverses it.
اُجْتُوبَ يُجْتَابُ — it was / is traversed.
The middle weak letter alternates in its written representation, including a wāw-like passive-perfect form and an alif in other positions. A passive form must not be glossed as though its grammatical subject were the active doer.

14. Ikhtāra: Hollow-Yāʾ Form VIII

اِخْتَارَ means “to select or choose” and derives from خ ي ر. After the infixed tāʾ of Form VIII, the original yāʾ becomes long ā in the perfect; ī is visible in the verbal noun.

CategoryForm
Active perfectاِخْتَارَ
Active imperfectيَخْتَارُ
Verbal nounاِخْتِيَارٌ
Active participleمُخْتَارٌ
Passive perfectاُخْتِيرَ
Passive imperfectيُخْتَارُ
Passive participleمُخْتَارٌ
Imperativeاِخْتَرْ
Prohibitionلَا تَخْتَرْ

اِخْتَرْ contracts the medial long vowel while the additional tāʾ remains.

15. Mukhtār: Identical Surface, Distinct Roles

مُخْتَارٌ can function as both an active participle and a passive participle. Hollow-stem alteration causes their written forms to coincide, but their semantic roles remain distinct.
Active participle: مُخْتَارٌ — one who chooses.
Passive participle: مُخْتَارٌ — one or something chosen.
If a person is called “the chooser,” the relation is active; if an option is called “the chosen one,” the relation is passive. Sentence context, rather than spelling alone, establishes the intended interpretation.

16. Form VIII: Wāw and Yāʾ Compared

Both examples are hollow Form-VIII verbs and both show medial ā in the perfect, yet their roots and meanings differ.

Featureاِجْتَابَاِخْتَارَ
Rootج و بخ ي ر
MeaningTraverseChoose
Verbal nounاِجْتِيَابٌاِخْتِيَارٌ
Imperativeاِجْتَبْاِخْتَرْ
Prohibitionلَا تَجْتَبْلَا تَخْتَرْ

The infixed tāʾ remains in both. Change of the original medial wāw or yāʾ into long ā is weak-letter alteration, not the loss of the additional tāʾ or a switch into another derived form.

17. Form VII: The Infiʿāl Pattern

Form VII uses the additional prefix consisting of hamzat al-waṣl and nūn. The regular strong-root model is اِنْفَعَلَ يَنْفَعِلُ اِنْفِعَالًا. Hollow roots produce altered surface forms in the perfect and verbal noun.
اِنْقَادَ — يَنْقَادُ — اِنْقِيَادًا
اِنْقَاضَ — يَنْقَاضُ — اِنْقِيَاضًا
Both examples share a derived pattern, but their meanings and final root consonants differ. The prefix `اِنْـ` alone does not determine whether the root is hollow wāw or hollow yāʾ.

18. Inqāda: To Yield or Follow

اِنْقَادَ means “to yield, submit or follow,” and derives from ق و د in Form VII. It conveys entering a condition of following or compliance.

CategoryForm
Active perfectاِنْقَادَ
Active imperfectيَنْقَادُ
Verbal nounاِنْقِيَادٌ
Active participleمُنْقَادٌ
Imperativeاِنْقَدْ
Prohibitionلَا تَنْقَدْ

اِنْقَدْ contracts the long middle vowel in the imperative under jussive formation. The visible alif does not make the verb Form IV: its prefix and full paradigm identify Form VII.

19. Inqāḍa: A Hollow-Yāʾ Example

اِنْقَاضَ is presented as a hollow-yāʾ Form-VII verb, with the sense of a wall cracking or splitting. Its root is ق ي ض.

CategoryForm
Perfectاِنْقَاضَ
Imperfectيَنْقَاضُ
Verbal nounاِنْقِيَاضٌ
Active participleمُنْقَاضٌ
Imperativeاِنْقَضْ
Prohibitionلَا تَنْقَضْ

The contracted command اِنْقَضْ shows that a hollow long vowel is not retained mechanically in every grammatical environment. This example is treated intransitively here; unattested passive derivatives are not forced into the short paradigm.

20. Contrasting the Two Form-VII Examples

The two Form-VII examples share the prefix `اِنْـ`, but their roots differ in the middle weak letter and the final consonant.

Featureاِنْقَادَاِنْقَاضَ
Rootق و دق ي ض
MeaningYield/obeySplit/crack
Verbal nounاِنْقِيَادٌاِنْقِيَاضٌ
Active participleمُنْقَادٌمُنْقَاضٌ
Imperativeاِنْقَدْاِنْقَضْ

The مُنْـ of both participles reflects a common derived pattern; their other letters identify distinct roots. Sharing a morphological template does not imply identical meaning.

21. Consolidated Table of Eight Paradigms

All eight examples from the four derived forms can now be compared in one table.

FormPerfectImperfectVerbal noun
IVأَقَامَيُقِيمُإِقَامَةٌ
IVأَطَارَيُطِيرُإِطَارَةٌ
Xاِسْتَعَانَيَسْتَعِينُاِسْتِعَانَةٌ
Xاِسْتَعَارَيَسْتَعِيرُاِسْتِعَارَةٌ
VIIIاِجْتَابَيَجْتَابُاِجْتِيَابٌ
VIIIاِخْتَارَيَخْتَارُاِخْتِيَارٌ
VIIاِنْقَادَيَنْقَادُاِنْقِيَادٌ
VIIاِنْقَاضَيَنْقَاضُاِنْقِيَاضٌ

Each pair belongs to one derived form, but its roots and sometimes meaning differ. Therefore both the derived-form label and the original root must be retained in analysis.

22. The Agent–Patient Distinction

When a verb is transitive and both voices are considered, the active participle names the agent, whereas the passive participle identifies the person or thing affected by the action.

VerbActive participlePassive participle
أَقَامَمُقِيمٌمُقَامٌ
أَطَارَمُطِيرٌمُطَارٌ
اِسْتَعَانَمُسْتَعِينٌمُسْتَعَانٌ
اِسْتَعَارَمُسْتَعِيرٌمُسْتَعَارٌ
اِخْتَارَمُخْتَارٌمُخْتَارٌ

Even though both interpretations of مُخْتَارٌ look alike, the active-agent and passive-patient relations must not be merged.

23. Imperatives and Prohibitions across the Eight

A direct imperative is built with reference to the imperfect stem and jussive formation. A prohibition uses prohibitive lā with a jussive imperfect. Many hollow verbs lose their long medial vowel in these environments.

PerfectImperativeProhibition
أَقَامَأَقِمْلَا تُقِمْ
أَطَارَأَطِرْلَا تُطِرْ
اِسْتَعَانَاِسْتَعِنْلَا تَسْتَعِنْ
اِسْتَعَارَاِسْتَعِرْلَا تَسْتَعِرْ
اِجْتَابَاِجْتَبْلَا تَجْتَبْ
اِخْتَارَاِخْتَرْلَا تَخْتَرْ
اِنْقَادَاِنْقَدْلَا تَنْقَدْ
اِنْقَاضَاِنْقَضْلَا تَنْقَضْ

Weak-vowel contraction does not erase the characteristic additional letters of the derived form. Each command therefore retains its Form-IV, X, VIII or VII identity.

24. Putting Root, Pattern and Inflection Together

Three pieces of information belong in a morphological analysis: root, derived form and conjugation position. For example, أَقِمْ has root ق و م, belongs to Form IV, and is a second-person masculine singular imperative. اِخْتَرْ has root خ ي ر, belongs to Form VIII, and has the same person/number/imperative function.
Both are hollow imperatives, but Form IV adds initial hamzat al-qaṭʿ and Form VIII contains an infixed tāʾ. A sound analysis captures both these commonalities and differences rather than matching surface letters alone.

25. Synthesis: Eight Cases in Four Derived Forms

The eight examples from four derived forms establish several principles: a hollow verb is identified from its original root, a perfect may show long ā, an imperfect may show ī or ā, and an imperative may display a shortened stem.

Word / formMeaning / explanation
Form IVأَقَامَ, أَطَارَ.
Form Xاِسْتَعَانَ, اِسْتَعَارَ.
Form VIIIاِجْتَابَ, اِخْتَارَ.
Form VIIاِنْقَادَ, اِنْقَاضَ.

Accurate recognition also preserves distinctions of voice, active versus passive participles, and commands versus prohibitions. A paradigm becomes useful when form and meaning are understood together.