In وَعَدَ يَعِدُ, the first radical wāw disappears in the imperfect; عِدْ is the resulting imperative. But not all initial-wāw verbs share the same vowels.
PerfectImperfectCommand
وَعَدَيَعِدُعِدْ
وَهَبَيَهَبُهَبْ
وَضَعَيَضَعُضَعْ
A good account names the root, attested imperfect, and actual deletion site—not just the slogan that “wāw drops.”
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Advanced Sarf Application: Ambiguous Forms, Weak-Letter Reasoning and Error Correction
In وَعَدَ يَعِدُ, the first radical wāw disappears in the imperfect; عِدْ is the resulting imperative. But not all initial-wāw verbs share the same vowels.
PerfectImperfectCommand
وَعَدَيَعِدُعِدْ
وَهَبَيَهَبُهَبْ
وَضَعَيَضَعُضَعْ
A good account names the root, attested imperfect, and actual deletion site—not just the slogan that “wāw drops.”