The word "Amoss" is a family name and is usually spelled with two s's - Amoss. The correct pronunciation of the word is [ə'mɑːs], where the first syllable is a schwa sound, followed by a long 'a' sound and then an 's' sound. The second syllable also has a schwa sound followed by the 's' sound. The IPA phonetic transcription is useful in understanding how to break down and pronounce unfamiliar words correctly, such as in the case of the surname Amoss.