Sermoneer, meaning a person who delivers a sermon or gives a preachy talk, has several antonyms that convey the opposite meaning. For instance, a listener who remains uninterested or unmoved by a preachy speech is called disinterested, apathetic, or detached. Someone who keeps quiet and does not express their views can be called reticent, introverted, or taciturn. If a person speaks casually or informally without moralizing or preaching, they can be referred to as colloquial, conversational, or informal. Additionally, a person who is curt, impatient, or dismissive towards others is called insensitive, impolite, or tactless. In summary, the antonyms for Sermoneer revolve around the lack of interest, informal conversations, and insensitivity towards others.