The phrase "more half yearly" refers to something that occurs more frequently than twice a year, but less frequently than monthly. There are several synonyms for this term, including "bimonthly," "biannually," and "semi-annually." "Bimonthly" means occurring every two months, while "biannually" and "semi-annually" both mean occurring twice a year. Additionally, the term "semi-monthly" can be used to describe something occurring twice a month, while "quarterly" refers to something occurring every three months. It is important to use the correct term to avoid confusion and ensure that communication is clear.