bimonthly

bi- +‎ monthly

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bimonthly (not comparable)

1. Occurring once every two months

   Synonyms: bimensal, bimestrial

   The organization's bimonthly meetings allow for two discussions each quarter.

   His bimonthly appointment was almost due.

2. Occurring twice every month.

   Synonym: semimonthly

See below.

bimonthly (not comparable)

1. Once every two months; bimestrially.

   The organization's board of directors meets bimonthly.

2. Twice every month; semimonthly.

   They checked on his progress bimonthly.

Because of the ambiguity of this word, it is best to avoid it. Instead, use twice a month or every two months as appropriate. Also see biweekly.

bimonthly (plural bimonthlies)

1. A publication that is published on a bimonthly basis.

   We have to get the report done. If the boss doesn't get his bimonthly he'll scream.

• fortnightly (every two weeks)