Monthly
Noun
まいつき
まいげつ
うちの学こうでは、毎月テストがあります。
There is a test at my school every month.
ゆうふくないえではありませんでしたが、わたしが大学生のとき、りょうしんは毎月生かつひをしおくりしてくれました。
Although my family wasn't rich, my parents sent a living allowance to me when I was in university.
毎月どのくらい家賃を払っていますか？
How much do you pay for rent each month?
Every moon is every month (as you know from all the month-related vocab). This can also mean monthly.
The most common reading for this word has the on'yomi reading for 毎 plus the kun'yomi reading for 月. That makes it まいつき. But it can be read まいげつ using both on'yomi readings too. You can use either!