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

New monitors sold in New York must include security features that stop strangers from watching or listening in, and must carry a clear warning label saying the device connects to the internet and that families should use its security settings. — Catherina Gioino, Fortune, 28 Oct. 2026

At the operational level, Washington should expand existing programs that oversee international defense industrial security. — Sam Mullins, Foreign Affairs, 28 Oct. 2026

The deal defines requirements for financial reporting, auditing, maintenance planning, security and coordination of capital investments. — CBS News, 28 Oct. 2026

That incident caused delays for its third flight, and the company did not get its certification to fly national security missions. — Richard Tribou, The Orlando Sentinel, 28 Oct. 2026