The word "Oncale" is an uncommon surname that is pronounced as "ɑŋkeɪl" in IPA phonetic transcription. The first syllable "ɑŋ" is pronounced like the "on" in the word "gone," followed by the "k" sound as in "cat." The second syllable "keɪl" is pronounced like "kale," with a long "a" sound. While the spelling of "Oncale" may seem unusual, its pronunciation is straightforward once broken down phonetically.