1. Deliberately impassive in manner
   "his face remained expressionless as the verdict was read"
   - deadpan, impassive, poker-faced, unexpressive, straight-faced

See also: incommunicative, uncommunicative

• mess jacket
• mess kit
• mess of pottage
• mess-up
• message
• message pad
• messaging
• messenger
• messenger boy
• messenger RNA
• messiah
• messiahship
• messianic
• Messidor
• messily
• Messina
• messiness
• messmate
• messuage
• messy
• mestiza
• mestizo
• mestranol
• Mesua
• Mesua ferrea