The correct spelling of "WINI" is determined by its phonetic pronunciation. Using the International Phonetic Alphabet (IPA), we can break down its sounds. "W" is pronounced as /w/, "I" as /ɪ/, and "N" as /n/. Therefore, the correct spelling is "WINI," not "WENI" or "WINY." This phonetic transcription system helps to eliminate potential spelling errors when a word is pronounced with different accents or dialects. It also ensures consistency in written communication, particularly in fields where precise language is essential.