The word "Kookoom" is a unique word with an unconventional spelling. Its pronunciation can be explained using the International Phonetic Alphabet (IPA), where it is represented as /kuːkum/. The first two letters, "k" and "oo" represent the sound /kuː/ as in the word "cool". The letter "k" is repeated again, followed by the sound /ʊm/ represented by the letters "um". Therefore, the pronunciation of "Kookoom" is /kuːkum/.