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Definition of “security” - Learner’s Dictionary

security

noun [U]     /sɪˈkjʊərəti/
BEING SAFE
B1 the things that are done to keep someone or something safe: airport/national security a security alarmSafe and secureProtection and protectorsEnvironmental issues
SAFE SITUATION
a situation in which something is not likely to fail or be lost: financial security job security Safe and secure
CONFIDENCE
confidence about yourself and the situation that you are in: the security of a long-term relationship →  Opposite insecurity (insecure) Confidence and self-assuranceShowing arrogance and conceit
BORROWING
something valuable that you offer to give someone when you borrow money if you cannot pay the money back →  See also social security Borrowing, lending and debt
INFORMATION
the protection of information against being stolen or used wrongly or illegally: IT security
Protection and protectorsEnvironmental issues
(Definition of security from the Cambridge Learners Dictionary © Cambridge University Press)
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Avoiding common errors with the word enough.
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by Liz Walter Enough is a very common word, but it is easy to make mistakes with it. You need to be careful about its position in a sentence, and the prepositions or verb patterns that come after it. I’ll start with the position of enough in the sentence. When we use it with a noun,

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