The spelling of the Greek surname "Provopoulos" can be explained with the International Phonetic Alphabet (IPA). The initial "P" is pronounced as /p/, followed by the "r" sound as /r/. The "o" sound is represented as /ɔ/, and the following "v" sound is transcribed as /v/. The next syllable contains the "o" sound again, pronounced as /ɔ/, followed by the letter "p" as /p/ and the letter "o" again as /ɔ/. The final syllable starts with the letter "u", pronounced as /u/, followed by the letter "s" as /s/. Therefore, the correct spelling of this surname is "Provopoulos", pronounced as /provo'pulos/.