impassive
im-PAS-ivadjMeaning showing no feeling on your face
Memory hook IM-PASS-ive: NO PASSION shows. The kids tell jokes and make silly faces, but the palace guard’s face does not move a bit. He is impassive.
The palace guard stared impassively ahead while the children made silly faces at him.
In context The judge listened to the dramatic story with an impassive face, so no one in the courtroom could guess what she was thinking.
Similar expressionless, unemotional, poker-faced, stolid
Opposite emotional, expressive, impassioned
From im- (not) + passive, in an old sense, “able to feel or suffer,” from Latin pati (to suffer).