freedom from danger, risk, etc.; safety.

freedom from care, anxiety, or doubt; well-founded confidence.

something that secures or makes safe; protection; defense.

freedom from financial cares or from want

The insurance policy gave the family security.

precautions taken to guard against crime, attack, sabotage, espionage, etc.

The senator claimed security was lax and potential enemies know our plans.

a department or organization responsible for protection or safety

He called security when he spotted the intruder.

protection or precautions taken against escape; custody

The dangerous criminal was placed under maximum security.

an assurance; guarantee.

Law .

something given or deposited as surety for the fulfillment of a promise or an obligation, the payment of a debt, etc.

one who becomes surety for another.

an evidence of debt or of property, as a bond or a certificate of stock.

Usually, securities. stocks and bonds.

Archaic . overconfidence; cockiness.

of, pertaining to, or serving as security

The company has instituted stricter security measures.

noun

danger , insecurity , peril , trouble , uncertainty , worry

noun

aegis , agreement , armament , armor , asylum , bail , bond , care , collateral , compact , contract , covenant , cover , custody , defense , earnest , freedom , guarantee , guard , immunity , insurance , pact , pawn , pledge , precaution , preservation , promise , redemption , refuge , retreat , safeguard , safekeeping , safeness , safety measure , salvation , sanctuary , shelter , shield , surety , surveillance , token , ward , warrant , assurance , calm , certainty , confidence , conviction , ease , positiveness , reliance , soundness , sureness , fastness , firmness , hardness , stableness , steadiness , strength , sturdiness , protection , protector , guaranty , bulwark , gage , hostage , indemnification , indemnity , lien , police , safety , stability , trust , vadium , warranty