Synonyms of security

security

noun

si-ˈkyu̇r-ə-tē 

1

as in defense

means or method of defending

measures taken to beef up our national security

Synonyms & Similar Words

• defense
• protection
• ammunition
• safeguard
• shield
• wall
• weapon
• guard
• screen
• armor
• ward
• armament
• cover
• aegis
• weaponry
• munitions
• buckler
• fortress
• stronghold
• arm
• fort
• palisade
• fastness

Antonyms & Near Antonyms

• attack
• assault
• offense
• aggression
• offensive

2

as in guarantee

something given or held to assure that the giver will keep a promise

their house will serve as security for the loan

Synonyms & Similar Words

• guarantee
• pledge
• promise
• assurance
• guaranty
• gage
• pawn
• deposit
• bond
• bail
• down payment
• contract
• warranty
• surety
• commitment
• oath
• earnest
• covenant
• compact
• recognizance
• word
• handsel
• troth

3

as in safety

the state of not being exposed to danger

after the burglaries, police presence in the neighborhood was enhanced to give residents a stronger sense of security

Synonyms & Similar Words

• safety
• protection
• defense
• safeness
• shelter
• refuge
• shield
• guardianship
• safeguard
• asylum
• screen
• ward
• guard
• aegis
• retreat
• inviolability
• harbor
• invulnerability
• cover
• invincibility
• haven
• impregnability
• invincibleness
• impregnableness
• inviolableness
• invulnerableness

Antonyms & Near Antonyms

• danger
• risk
• threat
• trouble
• distress
• jeopardy
• peril
• hazard
• instability
• endangerment
• precariousness
• vulnerability
• imperilment
• liability
• exposure
• openness
• susceptibility
• harm's way
• violability
• vulnerableness
• susceptibleness

Example Sentences

Recent Examples of security

Weeks later, China’s Ministry of Justice issued another first-of-its-kind order, declaring that the European Union’s antisubsidy probe into a Chinese security firm was an improper assertion of foreign jurisdiction. — Mark Jia, Foreign Affairs, 7 Aug. 2026

The pair will share the screen with Will Smith and AnnaSophia Robb, who play two FBI agents investigating a seemingly impossible murder within the impenetrable walls of a maximum-security prison. — Matt Grobar, Deadline, 7 Aug. 2026

Programs such as Global Entry and Mobile Passport Control can expedite the overall process, but even participating passengers aren’t exempt from random stops in the interest of protecting national security. — Joey Skladany, Travel + Leisure, 7 Aug. 2026

Following those incidents, the museum reinforced its security systems this past spring, notably with the installation of more cameras. — Devorah Lauter, ARTnews.com, 7 Aug. 2026