The spelling of the name "Kirssy" can be explained using the International Phonetic Alphabet (IPA). The first syllable, "kir", is pronounced with the vowel sound /ɪr/. The second syllable, "ssy", is pronounced with the consonant sound /s/ followed by the vowel sound /i/. Therefore, the correct spelling for the name "Kirssy" is K-i-r-s-s-y. The use of phonetic transcription can greatly help in understanding the pronunciation and spelling of words, especially for those learning English as a second language.