The spelling of the word "kouchner" can be explained using the International Phonetic Alphabet (IPA). This word is pronounced as "kuʃneər". The first syllable "kou" is pronounced with a "k" sound followed by an "ou" sound as in "ouch". The second syllable "chne" is pronounced with a "ʃ" sound as in "shoe" followed by an "n" sound and an "e" sound as in "net". The final syllable "r" is pronounced as the letter "r". This is how the word "kouchner" is spelled and pronounced using IPA.