IPA: /ɪmˈpæsɪv/
KK: /ɪmˈpæsɪv/
Not showing any emotion or feeling; expressionless and calm.
Despite the chaos around her, she remained impassive and focused on her work.
Impassive → It is formed from "im-" (meaning not) and "passivus" (from Latin, meaning capable of feeling or suffering). The word "impassive" describes a state of being not capable of feeling or showing emotion.
Think of 'not' ('im-') feeling or 'suffering' ('passivus') — that's why impassive means not showing emotion.