The spelling of "most irriguous" may seem tricky, but it can be broken down through its phonetic transcription: /moʊst ɪˈrɪɡjuəs/. The first syllable, "most," is pronounced like "mo-st," with a long "o" sound followed by a soft "s" sound. The second syllable, "ir-rig-u-ous," begins with a short "i" sound, followed by a rolled "r," a long "i" sound, a hard "g," and a soft "yoo" sound. The word means "most watered" or "most moist."