つきな月並tsukinaみmiつきなみ月次tsukinamiげつじ月次getsuji
1.
Referring to something that occurs or is done every month, implying a sense of regularity or routine.
2.
Characterized by a lack of originality or creativity; often used to describe ideas, expressions, or actions that are common and unremarkable.
Example:
月並みのパーティーだったよ。