Pretentious speech is disliked

It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) said: "Indeed, Allah strongly dislikes among people the one who is eloquent in speech, who (opens his mouth wide and speaks with affectation and artificiality) repeatedly moves his tongue like a cow chews cud."

‘Umar bin Sa‘d says: I needed something from my father, and Abu Hayyan narrated from Majma‘: ‘Umar bin Sa‘d had some need from his father, but before expressing his need (as a prelude), he spoke in such a way as common people do to reach their needs. But Sa‘d was not paying any attention to his son’s words. When the son finished speaking, the father said: Son! Have you completed your speech? He said: Yes. The father said: Since hearing these words of yours, I have never been further from (fulfilling) your need, nor less inclined towards you, than I am now. I heard the Messenger of Allah (peace and blessings be upon him) say: Soon there will arise people who will consume with their tongues as cattle graze on lush, green land.