Properties of the Six Basic Triliteral Forms: Contest, Transitivity, and Semantic Patterns

1. What Is a Property of a Verb Form?

A property of a verb form (khāṣiyyat al-bāb) is an additional sense commonly associated with a conjugational pattern, beyond the lexical meaning supplied by its root. Root meaning and form-specific usage should therefore be studied together.
نَصَرَ يَنْصُرُ
Translation: He helped; he helps.
This is an ordinary conjugation. The notable feature of Form Naṣara emerges in certain expressions of prevailing in a contest. A characteristic pattern does not mean that every word in that class must always carry the extra meaning.

2. The Six Basic Triliteral Classes

The book gives six classes for unaugmented triliteral verbs. Recognize the vowel on the middle radical, particularly in the imperfect:

ClassPerfectImperfectExample
Naṣaraفَعَلَيَفْعُلُنَصَرَ يَنْصُرُ
Ḍarabaفَعَلَيَفْعِلُضَرَبَ يَضْرِبُ
Samiʿaفَعِلَيَفْعَلُسَمِعَ يَسْمَعُ
Fataḥaفَعَلَيَفْعَلُفَتَحَ يَفْتَحُ
Karumaفَعُلَيَفْعُلُكَرُمَ يَكْرُمُ
Ḥasibaفَعِلَيَفْعِلُحَسِبَ يَحْسِبُ

The key diagnostic is the vowel of the second radical (ʿayn), not merely the initial consonant.

3. Why the First Three Are Called Principal Classes

The first three classes are called umm al-abwāb / principal classes in this text. Their middle-radical vowels change between the perfect and imperfect:

ClassPerfect middle vowelImperfect middle vowel
Naṣaraau
Ḍarabaai
Samiʿaia

These classes are also very common. 'Principal' is a technical classification, not a claim that the remaining three are defective or invalid.

4. Naṣara: The Sense of Prevailing in Contest

A noted characteristic of Naṣara is mughālabah: expressing that one of two competing parties prevails. The action that describes the contest and the verb that announces the victory play different roles.
خَاصَمَنِي زَيْدٌ فَخَصَمْتُهُ
Translation: Zayd disputed with me, and I prevailed over him in the dispute.
يُخَاصِمُنِي زَيْدٌ فَأَخْصُمُهُ
Translation: Zayd challenges me, and I prevail over him.
The first verb indicates mutual contention; the second states the outcome.

5. Two Functions in a Contest Construction

Do not assign exactly the same meaning to the two verbs in a contest expression:

PartVerbFunction
ContestخَاصَمَنِيDisputed with me
OutcomeفَخَصَمْتُهُI prevailed over him

The connective فَـ indicates sequence; it does not itself create the sense of victory. The relevant morphological point is the form selected to express the successful outcome. The wider context remains important.

6. Ḍaraba: Contest with Certain Weak Roots

Ḍaraba also serves the contest-and-prevailing sense, but the book singles out particular root types: initially weak, hollow-yāʾ, and finally weak-yāʾ verbs in the stated mughālabah construction.
بَايَعَنِي زَيْدٌ فَبِعْتُهُ
Translation: Zayd competed in buying and selling with me, and I prevailed over him in that contest.
Here `بِعْتُ` reflects a hollow-yāʾ root. The case does not mean that every verb associated with a contest can arbitrarily be shifted to Ḍaraba.

7. Why Biʿtu Is Relevant Here

بَاعَ — يَبِيعُ — بِعْتُ
Translation: He sold; he sells; I sold.
The root ب ي ع contains yāʾ as its middle radical, so it is a hollow-yāʾ verb. The visible long vowel in بَاعَ is not the full story: inflection also yields بِعْتُ. Identify the root, not just the surface letters.

ItemResult
Rootب ي ع
TypeHollow-yāʾ
Imperfectيَبِيعُ
First-person perfectبِعْتُ

8. Summary Rule for Contest Constructions

For the specialized mughālabah construction the book contrasts these root types:

Root typeClass used for prevailing
SoundNaṣara
Hollow-wāwNaṣara
Final-wāwNaṣara
Initially weakḌaraba
Hollow-yāʾḌaraba
Final-yāʾḌaraba

This is a rule for a specific contest usage, not a replacement for the ordinary dictionary conjugation of every Arabic verb.

9. Identify the Root Before Choosing a Class

Classify the root before applying the contest rule:

ExampleRootType
ضَرَبَض ر بSound
قَالَق و لHollow-wāw
دَعَاد ع وFinal-wāw
وَعَدَو ع دInitially weak
بَاعَب ي عHollow-yāʾ
رَمَىر م يFinal-yāʾ

The spelling قَالَ and بَاعَ contains alif in both cases, but their underlying middle radicals differ. That difference determines the appropriate branch of the textbook's rule.

10. Samiʿa: A Predominance of Intransitives

The book says Samiʿa contains more intransitive verbs and fewer transitive ones. An intransitive verb completes its core meaning with its subject, while a transitive verb also relates the action to an object.
فَرِحَ زَيْدٌ
Translation: Zayd rejoiced.
The feeling belongs to Zayd; it is not presented as an act performed upon an object. This is a tendency, not an exceptionless statement about every verb in the class.

11. Samiʿa: Illness and Sorrow

The textbook highlights words of illness and sorrow as frequent members of Samiʿa:
سَقِمَ
Translation: He became ill.
حَزِنَ
Translation: He felt sad.
Both have kasra on the middle radical of the perfect. Their specific meanings come from their roots; the class-level observation concerns how often such semantic categories occur in this pattern.

12. Samiʿa: Joy, Colour, and Defect

The text also associates Samiʿa with happiness, colour or clarity, bodily defects, and physical appearance:

VerbMeaning
فَرِحَBecame happy
كَدِرَBecame turbid
عَوِرَWas one-eyed / defective in an eye
بَلِجَHad a broad/open brow

These meanings are not identical: some name feelings, others visible conditions or traits. The common point is that the textbook observes them frequently occurring in this class.

13. Diagnosing Samiʿa Without Overgeneralising

سَمِعَ يَسْمَعُ
Translation: He heard; he hears.
Samiʿa has kasra on the middle radical in the perfect and fatḥa in the imperfect. Importantly, سَمِعَ زَيْدٌ الصَّوْتَ
Translation: Zayd heard the sound.
The named model verb itself can take an object. Therefore 'mainly intransitive' does not mean 'all its verbs are intransitive.' Judge each verb in its actual usage.

14. Fataḥa: A Phonetic Tendency

The characteristic of Fataḥa here is phonetic rather than a single added semantic sense: its second or third radical is often a throat consonant. Both perfect and imperfect take fatḥa on the middle radical:
فَتَحَ يَفْتَحُ
Translation: He opened; he opens.
The six throat consonants are ء، ه، ع، ح، غ، خ. This is a prominent tendency, not a claim that every verb with a throat letter must belong to Fataḥa.

15. Fataḥa: Examples with Throat Consonants

Locate the throat consonant in the examples:

PerfectMeaningThroat consonant position
مَنَعَPreventedThird radical: ع
سَلَخَSkinnedThird radical: خ
جَحَدَDeniedSecond radical: ح
نَهَضَRose upSecond radical: ه
ذَهَبَWentSecond radical: ه

The relevant consonant may be the second or third radical. First identify the root's ف–ع–ل positions before applying the phonetic observation.

16. Fataḥa: Recorded Exceptions

After describing its characteristic, the book identifies certain exceptional or separately attested patterns.
رَكَنَ يَرْكَنُ
Translation: He inclined or relied.
أَبَى يَأْبَى
Translation: He refused.
Recognising the pattern depends on attested Arabic conjugation, not a mechanical rule based only on the visible consonants. A general tendency can coexist with exceptions preserved through usage.

17. Karuma: Natural and Character Traits

The book says Karuma is predominantly intransitive and frequently denotes inherent, natural or character traits.
حَسُنَ
Translation: Became good or beautiful.
صَغُرَ
Translation: Was small / became small.
كَبُرَ
Translation: Was great or grew large.
These often describe the subject's own condition rather than an action inflicted upon an object. The class has the shape فَعُلَ يَفْعُلُ, with ḍamma on the middle radical in both forms.

18. Karuma: Inherent and Moral Attributes

Karuma verbs may denote visible or intellectual qualities:

VerbCore meaningKind of attribute
حَسُنَWas good or beautifulAppearance or character
صَغُرَWas smallSize
كَبُرَWas large or greatSize or standing
فَقُهَBecame knowledgeableIntellectual capacity

An 'inherent' attribute is a semantic tendency: the verb characterises the subject. It does not mean that the attribute can never develop or change.

19. Samiʿa versus Karuma

Both Samiʿa and Karuma may be frequently intransitive, but they differ in vowel pattern and characteristic meanings:

FeatureSamiʿaKaruma
Patternفَعِلَ يَفْعَلُفَعُلَ يَفْعُلُ
Common meaningsFeelings, conditions, defectsEnduring or inherent attributes
Exampleفَرِحَحَسُنَ
MeaningRejoicedWas beautiful

Shared semantic territory is not enough to move a verb between conjugational classes. Check its attested perfect and imperfect.

20. Ḥasiba: A Relatively Small Vocabulary

Ḥasiba has the pattern فَعِلَ يَفْعِلُ: kasra appears on the middle radical of both the perfect and imperfect. The textbook describes its vocabulary as a limited number of attested words.
حَسِبَ يَحْسِبُ
Translation: He supposed; he supposes.
It does not assign a single semantic category to every word in this class. Learn the attested items and their vowel patterns.

21. Ḥasiba Vocabulary, Part 1

The textbook lists words from diverse semantic areas:

VerbMeaning
نَعِمَLived comfortably
وَثِقَTrusted
وَمِقَLoved
وَفِقَAgreed / was in accord
وَرِثَInherited
وَرِعَWas scrupulously pious
وَرِمَSwelled

The diversity of meanings shows why one universal semantic gloss should not be imposed on the entire Ḥasiba class.

22. Ḥasiba Vocabulary, Part 2

Further entries in the textbook's list span proximity, hostility, memory, movement, and states:

VerbMeaning
وَرِيَA spark was kindled
وَلِيَWas close
بَلِيَBecame worn out
وَغِرَBore a grudge
وَحِرَHeld hostility
وَهِلَRecalled / thought of something
وَطِئَTrod upon
يَئِسَDespaired
يَبِسَBecame dry

These vocabulary items should be learned with their individual meanings, not used as evidence for a fabricated universal semantic property.

23. A Comparative Map of All Six Classes

Consolidated map of the book's six basic classes:

ClassNotable characteristic
NaṣaraPrevailing in certain contest constructions
ḌarabaPrevailing with other designated root types
SamiʿaMany intransitives and condition verbs
FataḥaTendency toward a throat consonant as 2nd/3rd radical
KarumaOften intransitive; natural or personal qualities
ḤasibaSmaller set of specifically attested verbs

First read the vowels, then the root type, and finally the meaning in context.

24. Applying the Features without Forcing Them

Use a systematic procedure for an unfamiliar verb:
1. Identify the three radicals and verify that the verb is unaugmented.
2. Determine the form from the middle-radical vowels in the perfect and imperfect.
3. When the construction describes a contest and victory, test the textbook's Naṣara/Ḍaraba root-type rule.
4. Use the semantic tendencies of Samiʿa and Karuma as clues, not absolute definitions.
5. Check the position of throat consonants in Fataḥa, and the attested word list for Ḥasiba.
This preserves both morphological accuracy and contextual meaning.

25. Review and Analysis Practice

The six class features differ in kind: mughālabah is a specialised construction; predominant intransitivity is a frequency claim; throat consonants represent a phonetic tendency; and Ḥasiba has a restricted set of recorded words.

FormFirst question to ask
بَاعَ يَبِيعُIs root ب ي ع hollow-yāʾ?
فَرِحَDoes the Samiʿa pattern fit a condition?
مَنَعَ يَمْنَعُIs the third radical a throat consonant?
حَسُنَ يَحْسُنُDoes the Karuma verb name a trait?
وَثِقَIs it an attested Ḥasiba verb?

Next comes the independent topic properties of Form IV (Bāb Ifʿāl), beginning on printed page 88.