1. Inclined to secrecy or reticence about divulging information
   - close, closemouthed, secretive, tightlipped

See also: incommunicative, uncommunicative

• unservile
• unset
• unsettle
• unsettled
• unsettlement
• unsex
• unsexed
• unsexy
• unshackle
• unshackled
• unshaded
• unshadowed
• unshakable
• unshakably
• unshakeable
• unshaken
• unshaped
• unshapely
• unshapen
• unshared
• unsharpened
• unshaved
• unshaven
• unsheared
• unsheathe