Undeen is not a commonly used word, and its spelling can be confusing at first glance. The correct spelling of this word is /ʌnˈdiːn/. The initial sound is the open-mid back unrounded vowel, written as /ʌ/. The second syllable has a long "e" sound, represented by the letter "e" in the IPA as /iː/. Finally, the "-deen" ending is spelled out as /diːn/. This word may be unfamiliar, but understanding its phonetic spelling can assist in proper pronunciation.