1. Silent, not saying anything
   "Organized crime is thriving online but many victims want to keep stumm"
   - shtum, schtum, shtoom

Encyclopedia: Stumm

• offer price
• offer up
• offerer
• offering
• offeror
• offertory
• offhand
• offhanded
• offhandedly
• offhandedness
• office
• office block
• office boy
• office building
• office furniture
• office hours
• Office of Inspector General
• Office of Intelligence Support
• Office of Management and Budget
• Office of Naval Intelligence
• Office of the Dead
• office staff
• office-bearer
• officeholder
• officer