unemotional

US /ˌʌn.ɪˈmoʊ.ʃən.əl/
UK /ˌʌn.ɪˈmoʊ.ʃən.əl/
1.

tidak beremosi

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

:
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Investigators said the couple seemed oddly unemotional about the disappearance.