[or more secure; most secure] 1 a : protected from danger or harm
▪ We need to make our network more secure against attacks by hackers. ▪ The children were safe and secure in their beds. ▪ A safe is provided to keep your valuables secure from potential thieves.
b : providing protection from danger or harm
▪ You should store your valuables in a secure place. ▪ How secure is your front door?
c : guarded so that no one can enter or leave without approval
▪ You are now entering a secure area. ▪ (chiefly Brit) a secure unit for young offenders 2 : feeling safe and free from worries or doubt : confident
▪ I'm feeling secure about my place in the company. ▪ I was secure in the belief/knowledge that I had done all I could. [=I felt confident because I believed/knew that I had done all I could] ▪ They are financially secure. [=they have enough money to live on; they do not have to worry about money] — opposite insecure 3 a : firmly attached
▪ Is that shelf secure? ▪ Make sure the door is secure. [=shut tightly]
b : in a firm position that prevents unwanted movement
▪ a secure grip ▪ secure footing
c : not in danger of being lost or taken away
▪ The company has established a secure foothold in the market. ▪ He believes his job is secure. ▪ a secure investment ▪ They didn't begin to celebrate until they knew their victory was secure. 4 : known only to certain people
▪ You can access your bank account online using a secure [=secret] password.