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.
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Form VIII: The Infix Tāʾ
Derived Hollow Wāw and Yāʾ Verbs: Short Paradigms and Morphological Reasoning
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.