The word "speier" is a German surname that can be spelled in various ways due to differences in regional dialects. However, the most common spelling is "Speyer," which is the city that the surname originates from. The IPA phonetic transcription for this word is /ˈʃpaɪ.ər/. The "s" is pronounced as /ʃ/ in a voiceless postalveolar fricative. The "e" is pronounced as /aɪ/ in a diphthong. Finally, the "r" is pronounced as /r/ in an alveolar trill.