secretive (adj.)

• close
• closemouthed
• dark
• discreet
• evasive
• excretory
• lachrymal
• lachrymose
• lacrimatory
• lacteal
• meaningless
• mum
• reserved
• reticent
• rheumy
• salivary
• secret
• secretory
• seminal
• serous
• shifty
• silent
• spermatic
• taciturn
• uncommunicative
• unsociable
• watering
• watery