The correct spelling for the Australian city is Adelaide /ˈædəleɪd/. The first syllable is "ad" /æd/, pronounced like the word "add". The second syllable is "el" /ɛl/, pronounced like the letter L. The final syllable is "aid" /eɪd/, pronounced like the word "paid". Some common misspellings of the word are "Adelaid", "Adelade", and "Adalaide". It is important to use the correct spelling of place names to avoid confusion and ensure clear communication.