IPA: /ɪmˈpæsɪvnəs/
KK: /ɪmˈpæsɪvnəs/
The condition of not showing any emotions or feelings; being calm and unresponsive.
Her impassiveness during the crisis surprised everyone around her.
Impassiveness is formed from "im-" (meaning not) and "passive" (from Latin "passivus", meaning capable of feeling or suffering) and the suffix "-ness" (meaning the state of being). The word describes the state of being not capable of feeling or suffering, indicating emotional or physical indifference.
Think of 'not' ('im-') feeling or suffering ('passive') — that's what impassiveness means.