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security
/sɪˈkjʊərəti/
state of being free from danger
The bank installed high-tech cameras to improve security.
The bank added advanced surveillance to reduce risks of theft or unauthorized access.
formal
protection against threats, harm, or unauthorized access
Airport security has tightened since the incident.
Airport measures to prevent threats have become stricter.
She works in corporate security handling data protection.
Her job focuses on safeguarding company information from breaches.
Often used in contexts like national security, cybersecurity, or personal safety.
formal
something that provides protection, such as a guard or lock
The museum’s security system includes motion sensors.
The museum uses devices that detect movement to prevent theft.
Refers to physical or technological measures.
Investment
Finance
a certificate representing ownership of stocks or bonds
He invested in government securities for low risk.
He bought bonds issued by the government to minimize financial risk.
Common in finance and investment contexts.
Collocations
national securityprotection of a country from threatsdata securitymeasures to protect digital informationpersonal securitysafety measures for individualssecurity guarda person hired to protect property or peoplesecurity systema setup of devices like alarms or cameras
Synonyms
Antonyms
Related Phrases
Pro Tip
Distinguish from 'safety'
'Security' often implies protection against intentional threats (e.g., theft, espionage), while 'safety' refers to general protection from harm (e.g., accidents).
Gold Rule
Use 'security' for active protection
When describing systems, personnel, or measures designed to prevent harm or unauthorized access, use 'security'.
Word Origin
From Latin 'securitas', meaning 'freedom from care', derived from 'securus' (secure, safe). Entered English via Old French 'seurte' in the 15th century.
Usage Notes
Used broadly in everyday and technical contexts. In finance, 'security' refers to tradable financial assets like stocks or bonds.
Word Breakdown
se-
prefix meaning 'without' or 'free from'
prefix-cur-
root from Latin 'cura' (care)
root-ity
suffix forming abstract nouns
suffixEnglish Dictionary