| impassive(adjective, calm, cool, tough, cold) |
| expressionless(expression, adjective, dull, show, indifferent) |
| poker-faced(adjective, dull, detached, dead, blank) |
| vacant(adjective, cold, aloof, neutral, expressionless) |
| blank(expression, adjective, show, cool, flat) |
| unexpressive |
| empty(adjective, ineffective, fruitless) |
| apathetic(adjective, calm, dull, tough, flat) |
| inexpressive(expression, adjective, dull, show, indifferent) |
| serious(adjective, set, tough, severe, honest) |
| stoic(adjective, calm, tough, rational, straightforward) |
| dry(adjective, calm, tough, rational, straightforward) |
| poker face(noun, expression, adjective, idiom, cool) |
| wooden(adjective, dull, dead, blank, stiff) |
| cool(adjective, calm, dull, flat, detached) |
| emotionless(adjective, calm, dull, tough, flat) |
| flat(adjective, calm, dull, cool, tough) |
| frigid(adjective, calm, dull, cool, flat) |
| inscrutable(adjective, dull, dead, blank, impassive) |
| listless(adjective, calm, dull, flat, cold) |