The word "daddy" is an informal term commonly used to refer to one's father. It conveys a sense of affection and familiarity, often used by children or in casual contexts. The term can also be used in various cultural references or playful contexts to imply a capable or protective figure.
The term "daddy" comes from the earlier form "dad," which is a diminutive of "father." The word "dad" itself is believed to originate from toddler speech, reflecting how young children begin to speak and form words. The affectionate "daddy" form likely emerged in English around the 19th century.