The word shutt is typically spelled with two T's at the end, instead of just one. This is because the word has a short u sound in the middle, followed by a soft consonant sound that is pronounced with a slight pause. In IPA phonetic transcription, this sound is represented by the symbol /t̪/. By adding an extra T at the end, this spelling helps to emphasize the final consonant sound and helps to distinguish it from other similar sounding words like "shut" or "shutted."