Monthly (adjective)

1. Happening, produced, or occurring once a month.
2. Paid or payable once a month.

Origin:

Mid 17th century: from month + -ly1.

Examples:

1. The monthly rent is due on the first of every month.
2. The company holds a monthly meeting to discuss its progress.
3. She gets a monthly allowance from her parents.
4. The book club meets once a month to discuss their latest read.
5. She receives a monthly salary of $5000.