The word "TRESTORNARE" is spelled as /trɛstornarɛ/, which is an Italian verb that means "to overturn" or "to upset." It comprises two parts - "tresto" which means "upset" and "ornare" which means "to adorn." The spelling of this word is unique to Italian, and it can be challenging for non-native speakers to pronounce correctly. However, with the help of IPA phonetic transcription, it becomes easier to understand its pronunciation and meaning.