The spelling of the word "tettered" is often confusing due to its double consonant combination. However, the phonetic transcription shows that the word is pronounced /ˈtɛtərd/. In this transcription, the "tt" is represented by one consonant sound, which is a voiceless alveolar stop. This means that the word should be spelled with only one "t." "Tettered" means to have a skin eruption or rash, particularly one caused by a contagious disease like herpes.