An unwelcome experience is one that you do not like and did not want.
例句
The media has brought more unwelcome attention to the Royal Family...媒体对王室的过度关注令人反感。A colleague made unwelcome sexual advances towards her.一个同事对她进行性骚扰。
ADJ-GRADED
（访客）不受欢迎的
If you say that a visitor is unwelcome, you mean that you did not want them to come.
例句
...an unwelcome guest...不受欢迎的客人She was, quite deliberately, making him feel unwelcome.她是有意让他觉得自己不受欢迎。
英汉词典释义
adj.
不受欢迎的, 令人失望的, 令人讨厌的
I felt that we were unwelcome.我觉得我们是不受欢迎的。Dogs can deter unwelcome intruders.狗能够阻拦不受欢迎的闯入者。He parried the unwelcome question very skilfully.他很巧妙地避开了那个不受欢迎的问题。He was pleased to be able to fling off such an unwelcome responsibility.能摆脱如此令人厌烦的责任他感到很高兴。
英英词典释义
Adjective
1. not welcome; not giving pleasure or received with pleasure;