a periodical that is published every month (or 12 issues per year)
"I spent my morning at the library browsing through several monthly magazines about gardening and cooking."
A publication that is published once a month.
"I subscribed to the monthly newsletter so I wouldn't miss any of their latest tech updates."
In plain English: A monthly is something that happens once every month.
"The monthly allowance was not enough to cover all my expenses."
Usage: Do not use "monthly" as a noun when referring to a magazine; instead, call it a periodical or simply say you subscribe to a monthly publication. Reserve the word "monthly" for adjectives and adverbs describing frequency or specific dates within a month.
Occurring every month.
"The subscription costs twenty dollars monthly, so I set up an automatic payment to cover it on time."
In plain English: Monthly means something that happens once every month.
"She pays her monthly rent on the first day of every month."
Usage: Use monthly as an adjective to describe something that happens or is provided once every calendar month, such as a monthly payment or a monthly report. It functions identically to the adverb in this context, so you can place it directly before the noun it modifies.
Every month.
"I pay my rent monthly on the first day of each month."
In plain English: Monthly means something that happens once every month.
"I pay my rent monthly."
Usage: Use monthly as an adverb to indicate that an action happens once every calendar month, such as paying rent or receiving a paycheck. It functions independently without needing a preposition like "per" or "by.
The word monthly comes from Old English, formed by adding a suffix to the word for month. It entered Middle English and eventually modern English with the same meaning of occurring every month.