Adjective: impassive im'pa-siv
- Having or revealing little emotion or sensibility; not easily aroused or excited
"her impassive remoteness"; "he remained impassive, showing neither interest in nor concern for our plight";
- stolid
- Showing no emotion; having a blank or expressionless face
"The guard remained impassive despite the commotion";
- deadpan, expressionless, poker-faced, unexpressive, straight-faced, stone-faced [informal], stony-faced [informal]
See also: incommunicative, uncommunicative, unemotional
Encyclopedia: Impassive