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

See also: incommunicative, uncommunicative

• tricker
• trickery
• trickily
• trickiness
• trickle
• trickle-down
• trickster
• tricksy
• tricky
• triclinic
• triclinium
• tricolor
• tricolor television tube
• tricolor tube
• tricolour
• tricolour television tube
• tricolour tube
• tricorn
• tricorne
• tricot
• tricuspid
• tricuspid valve
• tricuspidate
• tricycle
• tricyclic