The word "frenzen" may look unfamiliar, but it is a valid word in German, meaning "to frown". It is pronounced as /ˈfʁɛn.t͡sən/ in IPA phonetic transcription. The "fren" part is pronounced like "friend" without the "d" sound, while the "zen" part is pronounced like the English word "zen". The letter "z" in German often represents the "ts" sound. Knowing the IPA phonetic transcription can help you understand the spelling of unfamiliar words and improve your language skills.