If your thoughts, wishes, or feelings are unspoken, you do not speak about them.
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未说出口的批评。
When there is an unspoken agreement or understanding between people, their behaviour shows that they agree about something or understand it, even though they have never spoken about it.
There was an unspoken agreement that he and Viv would look after the frail old couple.
他和维夫有一个未说出的协定,那就是要一起照顾那对年老体弱的夫妇。