uninvited

形容词 uninvited:

1. unwelcome and unwanted

1. The old man stared the uninvited guest up and down.
   老人把不速之客上下打量了一番。
2. A whole crowd of us arrive at the party uninvited.
   我们这一大批不速之客来到了聚会场所。
3. A whole crowd of us arrived at the party uninvited.
   我们这一大批不速之客来到了聚会场所。