[1] : The Collaborative International Dictionary of English v.0.48

uninvited \uninvited\
   see invited.
see also:
invited 

[2] : WordNet (r) 2.0

uninvited
     adj 1: without being invited; "an unwanted intrusion"; "uninvited
            guests" syn: unasked, unwanted
     2: not invited ant: invited
see also:
unasked unwanted invited 

[3] : Moby Thesaurus II by Grady Ward, 1.0

43 moby thesaurus words for "uninvited":
   arbitrary, autonomous, discretional, discretionary, elective, free,
   free will, gratuitous, independent, nonmandatory, offered,
   optional, proffered, self-acting, self-active, self-determined,
   self-determining, spontaneous, unacceptable, unagreeable, unasked,
   unasked-for, unbesought, unbidden, uncalled-for, uncoerced,
   uncompelled, undesirable, undesired, unforced, uninfluenced,
   unpressured, unprompted, unrequested, unrequired, unsolicited,
   unsought, unwanted, unwelcome, unwished, voluntary, volunteer,
   willful

Uninvited >> U Words
Uninvited, definition of term: Uninvited
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