security

1 means or method of defending measures taken to beef up our national security Synonyms aegis (also egis), ammunition, armor, buckler, cover, guard, protection, safeguard, screen, defense, shield, wall, wardRelated Words arm, armament, munitions, weapon, weaponry; fastness, fort, fortress, palisade, strongholdNear Antonyms aggression, assault, attack, offense (or offence), offensive

2 something given or held to assure that the giver will keep a promise their house will serve as security for the loan Synonyms gage, guarantee, guaranty, pawn, pledgeRelated Words bail, bond; deposit, down payment, earnest, handsel; surety, warranty; assurance, oath, promise, troth, word; commitment, compact, contract, covenant; recognizance

3 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 protection, safeness, safetyRelated Words aegis (also egis), cover, defense, guardianship, ward; guard, safeguard, screen, shield; asylum, harbor, haven, refuge, retreat, shelter; impregnability, impregnableness, invincibility, invincibleness, inviolability, inviolableness, invulnerability, invulnerablenessNear Antonyms hazard, risk, threat; instability, precariousness; harm's way; exposure, liability, openness, violability, vulnerability, vulnerableness; susceptibility, susceptiblenessAntonyms danger, distress, endangerment, imperilment, jeopardy, peril, trouble