The word "rustle" is commonly spelled with an "e" at the end, but it can also be spelled "rustl" without the "e." In IPA phonetic transcription, the word is pronounced /ˈrʌsəl/ or /ˈrʌsl/. The "t" in "rustl" indicates a slight pause or stop in the sound, which distinguishes it from "rustle." This variation in spelling is not widely used and may be considered unconventional or incorrect in some contexts.