The term "hypertax" refers to an excessively high tax rate, and it is spelled with a prefix "hyper-" meaning "over" or "super" and the word "tax". The IPA transcription for this word is /haɪ.pər.tæks/, where "h" denotes the voiceless glottal fricative, "aɪ" represents the diphthong /aɪ/, "pər" is pronounced as /pər/, "tæks" stands for the word "tax" and is pronounced as /tæks/. Overall, "hypertax" is a compound word with clear and precise spelling, essential for effective communication in financial and legal contexts.