The spelling of the word "kairys" may seem unusual, but it can be explained using the International Phonetic Alphabet (IPA). The "k" sound is represented by the letter "k", while the "ai" sound is spelled using the combination "ai". This is followed by the "r" sound, represented by the letter "r", and the "y" sound, which is spelled using the letter "y". Finally, the "s" sound is represented by the letter "s". When pronounced using IPA, "kairys" sounds like [ˈkaɪrɪs].