Definition of secure adjective in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
As an adjective, "secure" refers to the state of being safe or protected from harm, whether physically, emotionally, or financially. This is its most common usage, offering assurance of stability and safety.
assured: secure of victory; secure in religious belief. safe from penetration or interception by unauthorized persons: secure radio communications between army units.
To protect or ensure the privacy or secrecy of (a telephone line, for example).