The word "koeppel" is spelled with a "k," followed by an "oe" which represents a long "o" sound, then double "p" and "e" to make the "p" sound. The final "el" ending represents a vowel sound followed by a consonant sound. The correct IPA phonetic transcription for "koeppel" is /ˈkɛpəl/. It is important to use correct spelling and IPA transcription to ensure clear communication and avoid confusion in written and spoken language.