The correct spelling of the word is actually "lottery". The IPA phonetic transcription of this word is /ˈlɒtəri/ (British English) or /ˈlɑːtəri/ (American English). The reason why some people may misspell it as "lotter" is because of the pronunciation of the second syllable. It may sound like "ter," which could be confusing. However, it is important to remember that the correct spelling is "lottery" to avoid any confusion or misunderstandings.