Bimonthly is a term that refers to something that occurs every two months, such as a publication or a meeting. However, there are other words that can be used as synonyms for bimonthly, including semi-monthly, which is used to describe something that occurs twice a month. Biweekly is also a synonym for bimonthly, but it refers to something that occurs every two weeks. Fortnightly is another term that can be used as a synonym for bimonthly, and it refers to something that occurs every two weeks as well. Ultimately, the choice of synonym depends on the context and the nature of the activity being referred to.