uninvited

adj

1. (not-comparable)Not invited.

   “But you, you're not allowed / You're uninvited / An unfortunate slight”

noun

1. (rare)One who was not invited.

   “The uninvited came to a Twilight concert! He was old and gray and blase and a cynic.”

   “In the future, if you know that you're going to be mixing inviteds and uninviteds while out, call them all ahead of time to caution the inviteds against talking about the wedding and to tell the uninviteds about your guest list so they know you didn't forget about them […]”

   “As if the uninvited was trying to escape from pain and that truth of that the lake's waters turned black because of her presence.”

verb

1. (form-of, participle, past)simple past and past participle of uninvite