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The Doubled Verb (الفعلُ المُضعَف)

Words which have two repeated or doubled letters in its root (base).

We will divide the doubled verb into two categories as the rules for each differ.

Doubled verbs
Triliteral verbsQuadrilateral verbs

Triliteral verbs are verbs with three radicals or letters in its root. Whereas quadrilateral verbs have four radicals.

Trilileral Doubled Verbs

These are three letter verbs where the 2nd and 3rd letters are the same. For example: شَدَّ، رَدَّ.

CommandPresentPast
رٌدّ/أُرْدديَرُدُّرَدَّ
شُدّ/ أُشْدُدْيَشُدُّشَدَّ
دُقّ/أُدقُقيَدُقُّدقَّ
  • Here the verb looks like it has only two letters in its stem. But actually there are three letters as the second letter of the verb has a Shaddah ّ on it which represents the letter repeating twice. رَدَّ = رَدَدَ.
  • When using the verb in the past tense, the duplicated letters can be unfolded in the case of  ( تاء الفاعل – نا الفاعلين – نون النسوة). Eg.: رَدَدْتُ / رَدَدْتَ / رَدَدْتِ / رَدَدْتُمَا / رَدَدْنَا / رَدَدْنَ.
  • When using the verb in present tenses, the duplicated letters can be unfolded when assigned to  نون النسوة. Eg.: يَرْدُدْنَ / تَرْدُدْنَ
  • When using the verb in the imperative tense, the duplicated letters can be unfolded when assigned to (نون النسوة and we should add Hamza  to the beginning of the verb as in ردَّ : أَردُدنَ.

Quadriliteral Doubled Verbs

These are verbs with four radicals in their root. The first and third radicals are the same also the second and fourth radicals are the same too . Eg.: زَلْزَلَ

These verbs follow normal conjugation.

CommandPresentPast
زَلْزِلْيُزَلْزِلُزَلْزَلَ
عَسعِسْيُعَسعِسُعَسْعَسَ
سَلْسِلْيُسَلْسِلُسَلسَلَ

In this case, the verbs are conjugated normally.

past tense
PluralDualSingular
Third Personرَدّواthey repliedرَدّاthey repliedرَدَّhe repliedM
رَدَدْنَthey repliedرَدَّتاthey repliedرَدَّتْshe repliedF
Second Personرَدَدْتُمْyou repliedرَدَدْتُماyou repliedرَدَدْتَyou repliedM
رَدَدْتُنَّyou repliedرَدَدْتُماyou repliedرَدَدْتِyou repliedF
First Personرَدَدْناwe repliedرَدَدْتُI repliedM & F
present tense
PluralDualSingular
Third Personيَرُدّونَthey repliedيَرُدّانِthey replyيَرُدُّhe repliesM
يَرْدُدْنَthey repliedتَرُدّانِthey repliedتَرُدُّshe repliesF
Second Personتَرُدُّونَyou repliedتَرُدّانِyou repliedتَرُدُّyou repliedM
تَرْدُدْنَyou repliedتَرُدّانِyou repliedتَرُدّينَyou repliedF
First Personنَرُدُّyou repliedأَرُدُّyou repliedM & F
imperative(command) tense
PluralDualSingular..
Third Person......M
......F
Second Personرُدّواreplyرُدّاreplyرُدَّ \ أُرْدُدْreplyM
أُرْدُدْنَreplyرُدّاreplyرُدّيreplyF
First Person......M & F

1 thought on “The Doubled Verb (الفعلُ المُضعَف)”

  1. ASSALAMO ALAICOM,

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