lip service noun
Learner's definition of LIP SERVICE
[noncount]
: support for someone or something that is expressed by someone in words but that is not shown in that person's actions空口承诺；口惠而实不至 -
She paid/gave/offered lip service to blue-collar workers, but she did nothing to help them.她口口声声支持蓝领工人，但没什么行动来帮他们。
-
So far all we've gotten from him is lip service.到目前为止我们从他那里得到的只是空口承诺。