poker face
Poker face (noun) means a blank expression that gives away nothing about what a person is thinking or feeling. Example: “She kept a perfect poker face while they read out the verdict.”
How to use poker face
Learner’s notesIn plain EnglishA face that shows nothing at all about what you are feeling.
Informal but universally understood, and common in business and negotiation writing as well as everyday speech.
Deadpan usually describes a comic delivery; a poker face is about hiding information, not being funny.
Trace the full origin ↓Fill the gap
Can you complete this real example?
She kept a perfect _____ while they read out the verdict.
Etymology
From the card game poker, in which concealing your reaction to your own hand is essential to play.