The word "Alyssus" is a proper noun that is not commonly used in everyday language. Its correct spelling is /əˈlɪsəs/ which can be phonetically transcribed as "uh-LISS-us". The first syllable "uh" is unstressed, and the following "LISS" is pronounced with a short "i" vowel sound. The final two syllables "us" are pronounced as a light "u" sound followed by an "s". It is important to pay attention to the correct spelling of proper nouns to ensure accuracy in communication.