"Haddest down pat" is a colloquial and informal phrase that originates from English-speaking regions. The term consists of three parts: "haddest," "down," and "pat."
"Haddest" is the archaic second-person singular form of "have," indicating possession or control over something in the past tense. It refers to an action or state that was accomplished or experienced by the subject at a specific time.
"Down" here functions as an adverb that intensifies the meaning of "haddest." It implies that the subject has thoroughly or completely achieved or acquired something. This term is often used to emphasize the level of proficiency or mastery attained by the subject in a given skill, task, or knowledge area.
"Pat" is an adverbial phrase meaning accurately, precisely, or exactly. It indicates the state of having complete command or knowledge of a subject or activity. When someone says they have something "down pat," they suggest that they have mastered it to the point where they can perform or execute it flawlessly, with great precision and efficiency.
In summary, "haddest down pat" means to have possessed complete control, proficiency, or mastery of a certain ability, task, or topic. It emphasizes the subject's thorough understanding and flawless execution of the said aspect, implying that they have completed it accurately and precisely.
