推辞的英文：
decline
refuse
reject

参考例句：

I invited him to dinner, but he declined on account of urgent business.
我请他吃饭，但他因有要事推辞了。

Without demur, they joined the party in my rooms
他们没有推辞就到我的屋里一起聚餐了。

decline是什么意思：
n. 下降；减少，衰退，衰落，最后部分；晚年，倾斜
v. 下降，下跌；减少；倾斜；婉拒；使降低，使变格

sink into a decline
开始衰落，衰弱下去，体力衰退

The population is on the decline.
人口在减少。

The decline of literature indicates the decline of a nation.
文学的衰落表明一个民族的衰落。

refuse是什么意思：
v. 拒绝；不肯；不愿
n. 废物，垃圾
adj. 无用的

refuse reclamation
垃圾回收; 废物再利用

You were quite right to refuse/in deciding to refuse/in your decision to refuse.
你予以拒绝[决定予以拒绝/予以拒绝的决定]是恰当的.

He who refuses nothing will soon have nothing to refuse.
对什么都不拒绝的人很快会没有东西可拒绝

reject是什么意思：
v. 拒绝；驳回；丢掉，抛弃
n. 不合格者；废品

The plan was rejected.
该计划遭拒绝。

Not welcome、content rejected 、Message Blocked、Recipient reject
对方拒收邮件

These feelings of rejection and hurt remain.
被拒绝和受伤的感觉还在。