bimonthly

/ˈbaɪˌmʌnθli/

/baɪˈmʌnθli/

Other forms: bimonthlies

When you do something twice a month, you do it bimonthly. Your bimonthly book club meeting will keep you busily reading to stay caught up.

Bimonthly is one of a group of confusing words (including biweekly and biannually) that have two meanings. You can use bimonthly to mean both "twice a month" and "every two months." The roots of the word are the Latin bi-, "twice" or "double," and monthly. The double definition means you might need to clarify how often your book club will actually meet.

Definitions of bimonthly

1. adjective

   occurring twice a month
   synonyms: semimonthly

   periodic, periodical

   happening or recurring at regular intervals
2. adverb

   twice a month
   synonyms: semimonthly
3. adjective

   occurring every two months
   “bimonthly visits”

   synonyms: bimestrial

   periodic, periodical

   happening or recurring at regular intervals
4. adverb

   every two months
   “the bill was payable bimonthly”
5. noun

   a periodical that is published twice a month or every two months (either 24 or 6 issues per year)
   type of:

   serial, serial publication, series

   a periodical that appears at scheduled times