expressionless

/ɪkˈspreʃənləs/📚 18904 6
If you describe someone's face as expressionless, you mean that they are not showing their feelings. 面无表情的

adjective [原级]无表情的;呆板的

Her voice was flat and expressionless.
她的声音平淡而呆板。

expressionless

-less ⌜ 表示缺乏或没有某种特性 - indicating the absence or lack of a particular quality ~ ⌟
单词造句:
网友用“Expressionless”造句精选
His face was expressionless, but Alex felt the unspoken criticism. 他面无表情,但亚历克斯感觉到了他无言的批评。
His face had become peculiarly expressionless. 他的脸变得异乎寻常地毫无表情。