not someone's problem
idiom
—used to say that someone is not responsible for dealing with something
The fact that you're late is not my problem.
Cite this Entry
“Not someone's problem.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/not%20someone%27s%20problem. Accessed 10 Dec. 2025.
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