The spelling of the word "leisy" follows the rules of English phonetics. It is pronounced /ˈlaɪsi/, with the first syllable being stressed. The "le" sound is represented by the "l" and "e" letters, while the "i" in the second syllable is pronounced as a long "i" sound. The "s" and "y" letters represent the consonant sounds at the end of the word. Overall, the spelling of "leisy" accurately reflects its pronunciation in English.