The word "uniden" is spelled with the IPA transcription /ˌjuː.naɪˈdɛn/. The first syllable "u-ni" is pronounced as "you-nee" with a long "u" sound followed by "nee". The second syllable "den" is pronounced with a short "e" sound, like "den" as in a place where animals live, rhyming with "pen". Overall, the pronunciation of "uniden" can be described as "you-nee-den" with emphasis on the second syllable. This spelling can be remembered through phonetic decoding and practice.