security
se-cu-ri-ty
noun
Measures taken to guard against crime, attack, or escape.
"They installed new security cameras around the building."
noun
The state of being free from danger or threat; safety.
"The airport has tight security to prevent terrorism."
noun
Something pledged as collateral for repayment of a loan.
"He offered his house as security for the bank loan."
Thesaurus
Synonyms: surety, security department, security measure, security system, protection, certificate, security measures
Antonyms: insecurity