if it's the last thing someone does
idiom
—used to say that a person is determined to do something
She'll get her revenge if it's the last thing she does!
Cite this Entry
“If it's the last thing someone does.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/if%20it%27s%20the%20last%20thing%20someone%20does. Accessed 29 Oct. 2025.
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