exprssion・less adj. 無表情な, 表情の乏しい; 気持ちの表現が薄い (expressive). ・expressionless black eyes 無表情な黒い目. ・Her face and voice were absolutely cold and expressionless. 彼女の顔も声も全く冷やかで無表情だった. 〜・ly adv. 〜・ness n. 《1819》: ⇒-less