1. Not firmly fastened or secured
   - unbarred, unbolted, unlatched, unlocked 
2. Without financial security
   "an unsecured note"
   - unguaranteed

See also: insecure, unfastened, unsafe

• sorting
• sorting algorithm
• sorting program
• sortition
• sorus
• SOS
• sostenuto
• sot
• soteriological
• Corinthian order
• Coriolis effect
• Coriolis force
• corium
• Corixa
• Corixidae
• cork
• cork jacket
• cork oak
• cork tree
• cork up
• corkage
• corkboard
• corked
• corker
• corking