«فصاحة الكلمة: سلامتها من تنافر الحروف، ومخالفة القياس، والغرابة»
An eloquent word is free of discordant sounds, morphological irregularity, and obscurity.
Tanāfur al-ḥurūf: Awkward clustering of sounds that makes pronunciation difficult.
Mukhālafat al-qiyās: Forming a word contrary to the relevant morphological pattern.
Gharābah: Unfamiliarity that makes the intended meaning hard to recognize.
All three conditions are necessary in this technical account: correctness of form does not replace ease of pronunciation or clarity of meaning.