形容词

1. 不受欢迎的；不想要的；讨人嫌的
An unwelcome experience is one that you do not like and did not want.

2. （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.

1. not welcome

e.g. unwelcome publicity

Synonym: unwishedunwished-for

2. not welcome
not giving pleasure or received with pleasure

e.g. unwelcome publicity
unwelcome interruptions
unwelcome visitors