Free from danger or risk; safe. The building is secure against intruders with its advanced alarm system.
Firmly fixed or fastened; not likely to give way. The ladder felt secure against the wall, so I climbed up without hesitation.
Confident and free from fear or doubt. She felt secure in her decision to pursue a new career path.
Protected against unauthorized access or attack. The secure server ensures that all data is encrypted and safe from hackers.
Not likely to fail or be lost; dependable and stable. Government bonds are considered a secure investment.