expressionless
Definitions
Lacking any outward sign of emotion or feeling in the face.
Showing no particular meaning or intent; blank.
Examples
He maintained an expressionless face even when he heard the shocking news.
The robot's expressionless eyes stared blankly into the distance.
Synonyms
blank deadpan impassive inscrutable poker-faced vacant wooden
Antonyms
expressive animated vivid demonstrative lively communicative revealing