THESAURUS
straight face
anesthesia, autism, catatonia, chill, chilliness, cold blood, cold heart, coldheartedness, coldness, coolness, deadpan, decorousness, demureness, dispassion, dispassionateness, dullness, earnestness, emotional deadness, emotionlessness, expressionlessness, formality, frigidity, frostiness, gravity, grimness, heartlessness, iciness, immovability, impassibility, impassiveness, impassivity, inexcitability, inexpressiveness, lack of affect, lack of feeling, lack of touch, long face, objectivity, obtuseness, passionlessness, poker face, sedateness, self-absorption, seriousness, sober-mindedness, soberness, sobersidedness, sobersides, sobriety, solemnity, solemnness, somberness, soullessness, spiritlessness, staidness, thoughtfulness, unemotionalism, unexcitability, unexpressiveness, unfeeling, unfeelingness, unimpressibility, unimpressionableness, unpassionateness, unresponsiveness, unsusceptibility, unsympatheticness, untouchability, weightiness, withdrawal
