poker-faced

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

deliberately impassive in manner (Freq. 1)
- deadpan humor
- his face remained expressionless as the verdict was read
• Syn:
deadpan, expressionless, impassive, unexpressive
• Similar to:
uncommunicative, incommunicative
• Derivationally related forms:
impassiveness (for: impassive)

• Từ đồng nghĩa / Synonyms:
  deadpan, expressionless, impassive, unexpressive