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

outr'e \ou`tr'e"\, a. f., p.p. of outer to exaggerate, fr. l.
   ultra beyond. see outrage.
   out of the common course or limits; extravagant2; bizarre;
   outlandish2; as, an outr'e costume.
   webster 1913 suppl. + pjc

         my first mental development had in it much of the
         uncommon -- even much of the outr'e.   --e. a. poe.
   webster 1913 suppl.
see also:
outrage 

[2] : WordNet (r) 2.0

outre
     adj : conspicuously or grossly unconventional or unusual;
           "restaurants of bizarre design--one like a hat, another
           like a rabbit"; "famed for his eccentric spelling"; "a
           freakish combination of styles"; "his off-the-wall
           antics"; "the outlandish clothes of teenagers"; "outre
           and affected stage antics" syn: bizarre, eccentric,
            freakish, freaky, flaky, off-the-wall, outlandish
see also:
bizarre eccentric freakish freaky flaky off-the-wall 
outlandish 

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

31 moby thesaurus words for "outre":
   absurd, beyond belief, bizarre, cockamamie, crazy, extravagant,
   fantastic, foolish, freakish, grotesque, high-flown, incredible,
   kinky, laughable, ludicrous, monstrous, nonsensical, odd,
   out-of-the-way, outlandish, outrageous, peculiar, poppycockish,
   preposterous, ridiculous, strange, ultra, unconventional, unusual,
   weird, wild

Outre >> O Words
Outre, definition of term: Outre
outre_pag1.html