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monthlong

American  
[muhnth-lawng] / ˈmʌnθˌlɔŋ /

adjective

  1. lasting one calendar month.

adverb

  1. Literary. for the duration of one month.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.