Nayan can be phonetically spelled in several ways depending on the desired level of detail and the target language/dialect. Here are a few options:

• Simple: Nay-an (This is a straightforward, widely understood phonetic representation.)

• More Detailed (IPA-based): /ˈnaɪæn/ (This uses the International Phonetic Alphabet, providing a precise representation of the sounds. /n/ as in "no," /aɪ/ as in "eye," /æ/ as in "cat," /n/ as in "no".)

• Emphasis on Syllables: NA-yan (This clearly indicates the two syllables.)

• Regional Variations: The pronunciation might vary slightly depending on the speaker's native language or region. For example, in some dialects, the "a" in "Nayan" might be closer to "ah" as in "father." A more detailed phonetic transcription would need to specify this variation.

The best option depends on the context. For general use, "Nay-an" is sufficient. For linguistic analysis or teaching pronunciation, the IPA transcription is more precise. For emphasizing syllable structure, "NA-yan" is helpful.