emotionless

Synonyms: blank chill cold cold-blooded cold fish cool cool cat deadpan detached dispassionate distant flat frigid glacial heartless icy immovable impassive impersonal in cold blood indifferent laid back matter-of-fact nonemotional nowhere poker face remote reserved stony-eyed thick-skinned toneless unemotional unimpassioned with straight face

Antonyms: demonstrative emotional feeling passionate sympathetic