I.
a.
1.
Certain, sure, assured, confident.
2.
Safe, free from danger, protected, insured.
3.
Fixed, fast, stable, immovable.
4.
Careless, unsuspecting, undisturbed, easy.
5.
Over-confident, incautious, careless, inattentive, heedless, negligent.
6.
Confident, relying, depending.
II.
v. a.
1.
Guard, protect, make safe.
2.
Insure, assure, ensure, guarantee, make sure, make certain, make sure of.
3.
Fasten, make fast.
4.
Get, acquire, gain, procure, obtain, get possession of.