The word "Hastert" is an example of a complex spelling, where multiple consonants appear together. The IPA phonetic transcription for this word is /ˈhæstərt/, where the "h" represents a voiceless glottal fricative, the "a" is pronounced as the short "a" sound, and the "t" is a voiceless alveolar stop. The "-stert" ending is a cluster of consonants, with the "s" being voiceless alveolar fricative and the "-ert" being pronounced as a syllabic "r". This challenging spelling may require careful pronunciation and memorization.