An utterance may be free of phonetic discord, grammatical violation, and obscurity yet remain unsuitable for its setting. During an emergency, for example, someone needing an immediate clear instruction may be poorly served by a flawless but lengthy preamble.
Conversely, a technical dispute requiring evidence is not adequately addressed by merely saying, “That is correct,” even if the sentence itself is clear.
A defect of fasāḥah concerns the words or their arrangement. Failure of contextual conformity concerns the relationship between the complete utterance and the circumstances.