uninvited

未受邀请的、未经邀请的

Several uninvited guests showed up at the wedding reception.

婚宴上出现了几位未受邀请的客人。

不请自来的、未经请求的、不受欢迎的

She resented his uninvited comments about her parenting.

她很反感他对她教养方式的那些不请自来的评论。

未受邀请地、擅自

He turned up uninvited and stayed until midnight.

他未受邀请就跑来，还待到半夜。