im·pas·sive 
/ɪmˈpæsɪv/ adjective
/ɪmˈpæsɪv/ adjective [more impassive; most impassive] : not showing emotion
▪ an impassive observer ▪ Her face/expression remained impassive throughout the trial.
▪ an impassive observer ▪ Her face/expression remained impassive throughout the trial.
— im·pas·sive·ly adverb
▪ She sat impassively throughout the trial.
▪ She sat impassively throughout the trial.
— im·pas·siv·i·ty /ɪmˌpæˈsɪvəti/ noun [noncount]
/ɪmˌpæˈsɪvəti/ noun [noncount]
