The correct spelling of the phrase "more have not" is /mɔː hæv nɒt/, with the silent 'e' in 'more' and the contraction of 'have not' to 'haven't'. This phrase can be used to describe a group of people who do not have something that others do. It is important to pay attention to spelling when communicating effectively, as confusion can easily arise from incorrect spellings. By using the correct spelling, we can ensure clear and concise communication.