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

umbrage \um"brage\ u^m"braslj; 48, n. f. ombrage shade,
   suspicion, umbrage, l. umbraticus belonging to shade, fr.
   umbra a shade. cf. umber, umbratic.
   1. shade; shadow; obscurity; hence, that which affords a
      shade, as a screen of trees or foliage.
      1913 webster

            where highest woods, impenetrable
            to star or sunlight, spread their umbrage broad.
                                                  --milton.
      1913 webster

   2. shadowy resemblance; shadow. obs.
      1913 webster

            the opinion carries no show of truth nor umbrage of
            reason on its side.                   --woodward.
      1913 webster

   3. the feeling of being overshadowed; jealousy of another, as
      standing in one's light or way; hence, suspicion of injury
      or wrong; offense; resentment.
      1913 webster

            which gave umbrage to wiser than myself. --evelyn.
      1913 webster

            persons who feel most umbrage from the overshadowing
            aristocracy.                          --sir w.
                                                  scott.
      1913 webster
see also:
umber umbratic 

[2] : WordNet (r) 2.0

umbrage
     n : a feeling of anger caused by being offended; "he took
         offence at my question" syn: offense, offence
see also:
offense offence 

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

51 moby thesaurus words for "umbrage":
   adumbration, angry look, annoyance, dark shade, dirty look,
   dudgeon, enrage, exasperation, foliage, foliation, frondage, frown,
   fury, glare, gloom, glower, huff, incense, infuriate, ire, irking,
   irritation, leafage, leafiness, mad, madden, mere shadow, miff,
   nettling, offense, penumbra, pique, provoking, rage, resentment,
   scowl, screen, shade, shadiness, shadow, shadows numberless,
   silhouette, skiagram, skiagraph, snuff, steam up, umbra,
   umbrageousness, verdure, vexation, wrath

Umbrage >> U Words
Umbrage, definition of term: Umbrage
umbrage_pag1.html