acknowledgement
n.承认，确认；致谢，鸣谢；收条；[法]承认书
网络解释.回单；收到的通知；肯定应答；承认承认
词形变化:
复数：acknowledgements
n.1.承认;自认释义下的反义词
denial
greeting recognition
双语例句
1. 1 . Their replies were no more than grunts of acknowledgement .
他们所谓的回答不过是表示承认的咕哝罢了。
来自柯林斯例句