The spelling of the word "Guilliams" is tricky, as it contains silent letters and a unique combination of sounds. In IPA phonetic transcription, it is spelled as /ˈɡiljəmz/. The first syllable is pronounced with a hard "g" sound and a long "i" sound. The second syllable features a silent "l" and a short "i" sound. The final syllable contains a silent "m" and a soft "z" sound. With its unusual spelling and pronunciation, Guilliams proves to be a challenging word to spell correctly.