Correctitude is the state of behaving in a very proper way — the right clothes, the right manners, the right words, nothing out of line. It is a rare, slightly old-fashioned noun. When it appears, there is often a raised eyebrow in it: not just “good manners,” but a stiffness, a person who is almost too correct. You would not ask for “more correctitude” in daily life. You might find it in a novel or a dry joke about someone who never puts a foot wrong, and perhaps never has much fun either. Though actually, it is built in a simple way from correct, so the meaning is not mysterious; it is only that almost nobody reaches for this noun any more. Rectitude is the cousin you are more likely to meet, and that one is about moral uprightness, not table manners.

舉止端正、過分循規蹈矩（罕見、老派，常帶一點「正經過頭」的味道）