The word "fingerglass" can be spelled confusingly, as it contains a silent "g" and a "ph" that creates the "f" sound. Using the International Phonetic Alphabet (IPA), the pronunciation of "fingerglass" is /ˈfɪŋ.ɡlɑːs/. The initial "f" sound is made by combining the letters "ph" together, while the silent "g" is followed by the nasal "n" sound in "ing". The result is a challenging spelling that may catch people off guard, especially since the actual word "fiberglass" is spelled very differently.