The spelling of the word "Tullis" is not immediately clear from its pronunciation. However, using IPA phonetic transcription, we can understand that the "T" is pronounced as a voiceless alveolar stop, the "u" as a short central vowel, the "l" as a voiced alveolar lateral approximant, the "i" as a short vowel, and the "s" as a voiceless alveolar fricative. The doubled "l" implies that the stress falls on the second syllable, making the pronunciation tuh-LISS.