not on

idiom

Definition of not on

British, informal
1 : not acceptable or proper Cheating old ladies out of their savings just isn't on.
2 : not possible I'm afraid that scheme's just not on.

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Notomys

not on

not on any account

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Cite this Entry

“Not on.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/not%20on. Accessed 28 Sep. 2021.

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