The word "Rueb" is spelled with four letters and its pronunciation is /rjuːb/. The spelling of "Rueb" can be explained using IPA phonetic transcription, where "r" represents the consonant sound "r", "y" or "u" is pronounced as a long "u" sound, and "e" represents the short vowel "e" sound. Therefore, "Rueb" is pronounced as "roob" with emphasis on the first syllable. This word is uncommon and is not commonly used in everyday language.