The word "Tenna" is a somewhat unusual spelling, and it may be difficult to determine its pronunciation without guidance. However, by using the International Phonetic Alphabet (IPA), we can break down the sounds in "Tenna". Phonetically, it is spelled /ˈtɛnə/, which indicates that the first syllable is pronounced with a short "e" sound, the second syllable has a schwa sound, and the final syllable has a short "a" sound. With this knowledge, we can confidently pronounce the word as "ten-uh".