The word "凯蒂" is formed through phonetic translation, specifically as a transliteration of the English name "Katie". It is created by selecting two existing Chinese characters, "凯" (kǎi) and "蒂" (dì), whose combined pronunciation closely approximates the sound of the foreign name. The characters are chosen not only for their sound but often for their positive connotations, "凯" suggests triumph and victory, while "蒂" evokes the idea of a flower's stem or foundation, thereby embedding the foreign term into Chinese with a culturally resonant and auspicious flavor.