Adalfieri is an uncommon Italian surname that is spelled phonetically as [aˈdalfjɛri] in IPA transcription. The first sound, /a/, is an open front unrounded vowel, while the second sound, /d/, represents a voiced dental plosive. The third sound, /al/, is a diphthong made up of the open front unrounded vowel /a/ and the close front unrounded vowel /l/. The final sounds, /fjɛri/, are a combination of the voiceless labiodental fricative /f/, the close front unrounded vowel /j/ (like the "y" sound in "yes"), and the close-mid front unrounded vowel /ɛ/.
The word Adalfieri seems to have Germanic origins. The first part of the name, Adal, likely comes from the Old High German word adal meaning noble or nobleman. The second part of the name, fieri, is believed to have derived from the Old High German word fëhan or fëgen, which means to catch or to seize. Therefore, Adalfieri can be interpreted as nobleman who catches or nobleman who seizes.