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Mr. Tom Posted 6 years ago
Vocabulary

Idiom: flash on (to suddenly realize something)

Hi

Could you please tell me how common this idiom (flash on) is among native speakers? The Oxford dictionary says that it is informal, and that means it should be fairly common. I asked a native speaker friend from the USA recently and she said she had never heard this idiom in her entire life.

Flash on: to suddenly realize something. It flashed on me that she had been lying on the while.

https://www.oxfordlearnersdictionaries.com/definition/american_english/flash-on

Thanks,

Tom

  

Top answer

I know what it means, but I never say it and I can't remember ever hearing it. flash on, Slang. to have a sudden thought, insight, or inspiration about.

— Clive

  • I know what it means, but I never say it and I can't remember ever hearing it.
  • flash on, Slang.
  • to have a sudden thought, insight, or inspiration about.
  • to have a sudden, vivid memory or mental picture of: I just flashed on that day we spent at the lake.
  • to feel an instantaneous understanding and appreciation of.
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2 Answers
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I know what it means, but I never say it and I can't remember ever hearing it.

flash on, Slang.
  1. to have a sudden thought, insight, or inspiration about.
  2. to have a sudden, vivid memory or mental picture of: I just flashed on that day we spent at the lake.
  3. to feel an instantaneous understanding and appreciation of.

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Mr. TomIt flashed on me that she had been lying on the while.

I prefer to lie on a couch or on a bed.

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