When it comes to synonyms for "prim and proper," there are several options to choose from. Some alternative phrases that convey a similar meaning include "meticulous," "fastidious," "neat and tidy," and "well-groomed." Other synonyms could include "polished," "cultured," "immaculate," and "refined." Each of these words conveys an overall sense of elegance, poise, and attention to detail. Whether you're seeking to describe someone's dress sense, personal hygiene habits, or overall demeanor, using these synonyms for "prim and proper" can help you convey your message in a clear, concise, and meaningful way.