The spelling of the word "Ruft" seems somewhat unusual at first glance. However, it can be explained with the help of the International Phonetic Alphabet (IPA). The word "Ruft" is spelled as /rʊft/, where "r" is pronounced as the English "r" sound, "u" as the "uh" sound, "f" as the "f" sound and "t" as the "t" sound. In other words, "Ruft" is pronounced as "ruft" with a short "u" sound. It is always interesting to explore the fascinating intricacies of language and its spelling conventions.