unemotional

US /ˌʌn.ɪˈmoʊ.ʃən.əl/

UK /ˌʌn.ɪˈmoʊ.ʃən.əl/

vô cảm

not having or expressing strong feelings, often when this is surprising or a bad thing:

•

Investigators said the couple seemed oddly unemotional about the disappearance.