a wake-up call Meaning An event acts as a wake-up call if it | English Language

a wake-up call

Meaning
An event acts as a wake-up call if it makes people more aware of a danger.

For example

I slipped over on the wet floor in my bathroom. I didn't hurt myself badly, but it was a wake-up call and I went out and bought some non-slip mats to stick on the floor.

Robert had a pain in the chest, and it was a wake-up call for him. Now he's eating much healthier food and he's exercising more.
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