The spelling of the word "at alls" may seem confusing, but it is actually a colloquialism used to emphasize a negative statement. The correct spelling is "at all," but the addition of "s" at the end is used for emphasis when speaking. In phonetic transcription, it is pronounced /ət ɔlz/, with the schwa sound in "at" and the voiced "z" sound at the end of "alls." While this spelling may not be standard, it is commonly used in informal speech.