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English definition of “warning”

warning

adjective [before noun]     /ˈwɔːnɪŋ/
used to show that there might be danger or a problem in the future: Regulators were accused of ignoring the warning signs that led to the bank's collapse.
warning bells signs or information telling people that something bad might happen: The figures should sound warning bells that the economy is still too fragile to enable interest rates to rise.
(Definition of warning adjective from the Cambridge Business English Dictionary © Cambridge University Press)
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