The word "Strepent" is spelled with an "e" instead of an "i" due to a shift in pronunciation over time. In IPA phonetic transcription, the word is pronounced /strepənt/. The "e" represents the schwa sound, which is a neutral vowel sound often used in unstressed syllables. The "i" in the original Latin word "strepitus" was likely pronounced with a longer "ee" sound, but English speakers have evolved to use the schwa sound instead. This is just one example of how language is constantly changing and adapting over time.