The word "Sinos" is spelled with four letters: S-I-N-O-S. The IPA phonetic transcription for "Sinos" is /ˈsaɪnɒz/. The first sound is "s" which is pronounced as /s/. The second sound is "ai" which is pronounced as /aɪ/. The third sound is "n" and it is pronounced as /n/. The fourth sound is "o" which is pronounced as /ɒ/. The final sound is "s" and it is pronounced as /z/. Overall, it is a straightforward spelling that is easy to pronounce.