uninvited
🇺🇸
/ˌʌnɪnˈvaɪtɪd/
🇬🇧
/ˌʌnɪnˈvaɪtɪd/
Not asked to go somewhere or do something, especially when it's not wanted.
The uninvited guest arrived at the party, much to the host's surprise.
招待されなかった客がパーティーに現れ、主人を非常に驚かせました。