The spelling of the word "Gayna" can be explained through the use of the International Phonetic Alphabet (IPA). The first sound is a "ɡ" which represents the sound made by the letter "g" in English. The following sound is an "æ" which is pronounced like the "a" in "cat." The next sound is a "ɪ" which is pronounced like the "i" in "sit." Finally, the word ends with an "ə" which is pronounced as the "a" in "sofa." Thus, "Gayna" is pronounced as "GAEN-uh."