Vorobiev is a Russian surname that can be phonetically transcribed as [vəˈrɔbʲɪjəf]. The first syllable is stressed, and it starts with the vowel sound /ə/. The second syllable consists of the consonant sound /r/ followed by the vowel sound /ɔ/. The third syllable has the consonant sounds /bʲ/ and /j/ in sequence, forming a palatalized sound, which is commonly found in Russian. The final syllable consists of the consonant sound /f/. The spelling of Vorobiev follows the standard rules of Russian phonetics.
The etymology of the word "Vorobiev" can be traced back to the Russian language. "Vorobiev" (Воробьёв) is a patronymic surname derived from the Russian word "vorobey" (воробей), which means "sparrow" in English. It is a relatively common surname in Russia and other Slavic countries. Patronymic surnames are formed by taking the father's first name and adding a suffix to it, in this case, "Vorobiev" means "son of Vorobey".