1. in the sense of certainty
- safe future
- certainty
- safety
- assured future
- dependability
- reliability
- soundness
- solidness
2. in the sense of safety
- freedom from danger
- safety
- safe keeping
- protection
- guarding
- shielding
- invulnerability
- care
- unassailability
- impregnability
3. in the sense of safeguards
- safeguards
- safety measures
- surveillance
- guards
- protection
- defence
5. pledge
Example Sentences of Security
1. The building has top-notch security.
2. Security guards monitor the premises.
3. She updated her online security settings.
4. Security is a high priority.
5. They installed security cameras everywhere.