The spelling of the word "ECCSECDED" follows the International Phonetic Alphabet (IPA) phonetic transcription system. The first syllable is pronounced as "ɛk", followed by "sɛk", "dɛd", and finally "ɛd". The repetition of the syllables "sek" and "ded" gives the word its unique sound. While it may not be a commonly used word in English vocabulary, understanding its phonetic transcription can aid in the correct pronunciation of similar words.