insecurityn.[Pref. in- not + security : cf. LL. insecuritas, F. insecurite.]1. The condition or quality of being insecure; lack of safety; danger; hazard; as, the insecurity of a building liable to fire; insecurity of a debt.()2. The state of feeling insecure; uncertainty; lack of confidence.()With what insecurity of truth we ascribe effects . . . unto arbitrary calculations. (Sir T. Browne.)A time of insecurity, when interests of all sorts become objects of speculation. (Burke.)