uninvited  
adjective uk/ˌʌn.ɪnˈvaɪ.tɪd/ us/ˌʌn.ɪnˈvaɪ.t̬ɪd/
  (NOT INVITED)      
  未获邀请的;不速而至的
not invited
  an uninvited guest 不速之客 
 He arrived uninvited in a taxi. 他坐了一辆出租车不请自到。 
   (NOT WANTED)      
 未经要求的;不希望发生的
not wanted or asked for
  She shrank from his uninvited sexual advances. 他没有得到暗示就对她作出性试探,让她感到厌恶。