The deciding question is whether the first perfect form has three letters or more.
Word / formMeaning / explanation
نَصَرَ ← نَاصِرٌsound basic triliteral on fāʿil.
أَكْرَمَ ← يُكْرِمُ ← مُكْرِمٌderive from imperfect using mu-.
اِجْتَنَبَ ← يَجْتَنِبُ ← مُجْتَنِبٌretain the augmented verb pattern.
Initial mīm is not compulsory in every active participle: a simple triliteral produces forms such as nāṣir without it.
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Active Participles: Definition, Patterns, Paradigms and Derivation
The deciding question is whether the first perfect form has three letters or more.
Word / formMeaning / explanation
نَصَرَ ← نَاصِرٌsound basic triliteral on fāʿil.
أَكْرَمَ ← يُكْرِمُ ← مُكْرِمٌderive from imperfect using mu-.
اِجْتَنَبَ ← يَجْتَنِبُ ← مُجْتَنِبٌretain the augmented verb pattern.
Initial mīm is not compulsory in every active participle: a simple triliteral produces forms such as nāṣir without it.