monthly

UK: /ˈmʌnθli/ US: /ˈmʌnθli/ ,(munth′lē)

Inflections of 'monthly' (n): npl: monthlies

WordReference Random House Learner's Dictionary of American English © 2026

month•ly /ˈmʌnθli/   adj., n., pl. -lies, adv. 
adj. 

1. of or relating to a month, or to each month:
   a monthly salary.
2. done, happening, appearing, etc., once a month:
   a monthly magazine.

n. [countable]

3. a periodical published once a month.

adv. 

4. once a month.

WordReference Random House Unabridged Dictionary of American English © 2026

month•ly  (munth′lē), adj., n., pl. -lies, adv. 
adj. 

1. pertaining to a month, or to each month.
2. done, happening, appearing, etc., once a month:
   a monthly magazine.
3. computed or determined by the month:
   a monthly salary.
4. continuing or lasting for a month.

n. 

5. a periodical published once a month.
6. Informal Terms Sometimes, monthlies. a menstrual period.

adv. 

7. once a month;
   by the month.

• month + -ly 1525–35

Collins Concise English Dictionary © HarperCollins Publishers::

monthly / ˈmʌnθlɪ/ adjective

1. occurring, done, appearing, payable, etc, once every month
2. lasting or valid for a month

adverb

1. once a month

noun ( -lies)

1. a book, periodical, magazine, etc, published once a month
2. (often plural) a menstrual period