The word "rigo" is spelled as /ˈriːɡəʊ/ in IPA phonetic transcription. It is a valid word in the English language and is derived from the Latin word "rigeo," which means "to be stiff or rigid." The pronunciation of the word is characterized by a long "ee" sound followed by a soft "g" sound, ending with a "oh" sound. To ensure correct spelling of the word "rigo," it is essential to remember the correct sequence of letters that make up its pronunciation.