قَتَلَ — he killed.
قَاتَلَ — he fought or engaged in combat.
Both derive from q-t-l, but the added alif after the first radical creates the mufāʿalah pattern. Fighting does not entail that a killing has taken place: the two predicates are semantically distinct.
Similarly, خَدَعَ and خَادَعَ belong to different morphological patterns from the same root. Context and pattern together determine meaning; the augmented verb is not merely a longer pronunciation of the simple one.
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How form III differs from its base
Five Augmented Triliteral Patterns Without Hamzat al-Wasl
قَتَلَ — he killed.
قَاتَلَ — he fought or engaged in combat.
Both derive from q-t-l, but the added alif after the first radical creates the mufāʿalah pattern. Fighting does not entail that a killing has taken place: the two predicates are semantically distinct.
Similarly, خَدَعَ and خَادَعَ belong to different morphological patterns from the same root. Context and pattern together determine meaning; the augmented verb is not merely a longer pronunciation of the simple one.