Four-Consonant Roots (الفعل الرباعي)
Most Arabic words trace back to three-letter roots, but a special group of verbs is built on four core consonants. These are called quadriliteral verbs (الفعل الرباعي).
Their base conjugation is highly regular. The past tense follows the pattern فَعْلَلَ, and the present tense follows يُفَعْلِلُ.
| The boy rolled the ball while he was laughing. | دحرج الولد الكرة وهو يضحك.dahraja al-waladu al-kurata wa-huwa yadhaku |
| The boy rolls the wheel slowly. | يدحرج الولد العجلة ببطء.yudahriju al-waladu al-ajalata bibut'in |
| The girl scattered the papers in the room. | بعثرت البنت الأوراق في الغرفة.ba'tharati l-bintu l-awrâqa fi l-ghurfah |
The Verbal Noun (المصدر)
The verbal noun for quadriliteral verbs is one of the easiest to form in Arabic. Simply add a ة to the end of the base past tense pattern, creating the pattern فَعْلَلَة.
| Rolling the huge stone is impossible. | دحرجة الحجر الضخم مستحيلة.dahrajatu al-hajari ad-dakhmi mustahîlah. |
| Scattering the clothes is a problem. | بعثرة الملابس مشكلة.ba'tharatu l-malâbisi mushkilatun |
Academic and Artistic Actions
You will frequently encounter this four-letter pattern in academic, professional, and artistic contexts. Specialized concepts like indexing, translating, and decorating naturally fall into the فَعْلَلَ shape.
Note that the verb for "to prove" (برهن) is usually followed by the preposition على to express proving a fact or a point.
| The employee indexed the files to organize the work. | فهرس الموظف الملفات ليرتب العمل.faharasa al-muwadhdhafu al-malaffâti liyurattiba al-amala |
| Indexing the library requires time. | تحتاج فهرسة المكتبة إلى وقت.tahtâju fahrasatu al-maktabati ilâ waqtin |
| The scientist proved the truth. | برهن العالم على الحقيقة.barhana al-'âlimu 'alâ al-ḥaqîqati |
| The translation of the article was very accurate. | كانت ترجمة المقال صحيحة جدا.kânat tarjamatu al-maqâli saHîHatan jiddan |
| The artist decorated the wall with colors. | زخرف الفنان الجدار بالألوان.zakhrafa al-fannânu al-jidâra bil-alwâni |