Unemotional
Part of speech: adjective
Definition: Showing little or no feeling Reasoned and objective, involving reason or intellect rather than feelings
Reserved
Part of speech: verb
Definition: To keep back; to retain.
Part of speech: adjective
Definition: Slow to reveal emotion or opinions.Set aside for the use of a particular person or party.
Example sentence: The darkest places in hell are reserved for those who maintain their neutrality in times of moral crisis.