• synonyms


[sem-ee-muhnth-lee, sem-ahy-]
  1. made, occurring, done, or published twice a month.
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noun, plural sem·i·month·lies.
  1. something occurring every half month or twice a month.
  2. a semimonthly publication.
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  1. twice a month: We went semimonthly to see her.
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Origin of semimonthly

First recorded in 1855–60; semi- + monthly
Can be confusedbimonthly biweekly semimonthly (see usage note at bi-1)

Usage note

See bi-1.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for semi-monthly

Historical Examples

  • Also it should be a semi-monthly, or at least accompanied by a quarterly and annual.

    Astounding Stories of Super-Science, November, 1930


  • I subscribed for the semi-monthly Atlanta Journal—I could read that.

  • Two semi-monthly newspapers are published at Reykjavik, in the Icelandic language.

    The Land of Thor

    J. Ross Browne

  • The volumes will be issued semi-monthly, in regular succession.

    Sybil Chase

    Ann S. Stephens

  • We have a paper called The Young Naturalist, which is published semi-monthly.

Word Origin and History for semi-monthly


also semimonthly, 1809, from semi- + monthly.

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Online Etymology Dictionary, © 2010 Douglas Harper