The word "Shillem" refers to a Hebrew vowel mark, also known as a shva na' or a silent shva. It is spelled in transliteration as /ʃɪˈlɛm/. The first letter "sh" is pronounced as the sh sound in "shoe", followed by the 'i' sound as in "ship" and then the short "e" sound as in "get". The final syllable is pronounced as "lem" with a short "e" sound as in "bet". In Hebrew, this vowel mark indicates a short, unstressed vowel sound.