Origin: Latin suffix -ive
Impassive has 3 different meanings across 1 category:
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"
"a silent stolid creature who took it all as a matter of course"
"her face showed nothing but stolid indifference"
deliberately impassive in manner
"deadpan humor"
"his face remained expressionless as the verdict was read"
Having, or revealing, no emotion.