6 days ago · The meaning of SECURE is free from danger. How to use secure in a sentence. Synonym Discussion of Secure. To protect or ensure the privacy or secrecy of (a telephone line, for example). If you feel secure, you feel safe and happy and are not worried about life. She felt secure and protected when she was with her. SECURE definition: free from or not exposed to danger or harm; safe. See examples of secure used in a sentence. positioned or fixed firmly and correctly and therefore not likely to move, fall, or break: 2…. Secure means safe, protected. Your money is secure in a bank. Supportive friends and family make you feel secure. With a secure my Social Security account, you can get services and manage your benefits—anywhere, anytime. Sign in to calculate your benefits estimate. See what benefits you may qualify for.