Vaigauskas is a Lithuanian surname that can be tricky to spell and pronounce. The correct way to pronounce this surname is [Vai-ɡau-skas]. The first syllable "Vai" is pronounced like the word "eye," followed by "ɡau" which is similar to the word "gown," and finally "skas" pronounced like the word "skies." It is important to note that the "k" in "skas" is pronounced softly. With this understanding of the IPA phonetic transcription, you can now confidently spell and say Vaigauskas correctly.