The word "Roberdsman" is spelled with a silent "d", which can be confusing for those unfamiliar with the name. In IPA phonetic transcription, the word is pronounced as /ˈrɑbərtsmən/. The "d" in the middle of the word is silent, and the stress falls on the second syllable. This spelling is not commonly used in English, and it is possible that it is a variant spelling of an existing name. Regardless, it is important to remember the silent "d" when pronouncing "Roberdsman".