The spelling of the word "IFPSEED" can be explained using the IPA phonetic transcription system. The word is made up of six letters, each representing a specific sound. The first sound is the "i" sound, followed by a "f" sound, then a "p" sound, an "s" sound, and finally a "d" sound. The second "e" in the word is not pronounced, but is used to separate the "p" and "s" sounds. In short, "IFPSEED" is pronounced as "ihf-ps-d."