The uninvited attentions of a classmate.
An uninvited memory.
He also appears uninvited in your library at will.
Uninvited Guests: Have someone stamp hands or give out wristbands before people enter the party area.
He had been perfectly content to step back and let her bear the brunt of Giddon's anger, even knowing that he had arrived uninvited.
Looking around, she spotted his office and went in, uninvited.
The memory came to her uninvited and with such clarity that she flinched.