Fasāḥah lexically denotes clarity and manifestation. Technically, it may qualify a word, utterance, or speaker.
Three requirements for an eloquent word:
1. Freedom from sound discord — naturally fluent articulation.
2. Freedom from violation of qiyās — proper morphological formation.
3. Freedom from gharābah — a sufficiently intelligible intended meaning.
Core examples:
الهعخع — sound discord.
بوقات — morphological irregularity.
تكأكأ — semantic obscurity.
The next level turns to fasāḥat al-kalām: why a complete utterance can be ineloquent even when its words are individually eloquent.