The Collaborative International Dictionary of English v.0.48:

umbrageous \um*bra"geous\ ([u^]m*br[=a]"j[u^]s; 277), a. [Cf. F.
   ombrageux shy, skittish, suspicious, in OF. also, shady. See
   Umbrage.]
   1. Forming or affording a shade; shady; shaded; as,
      umbrageous trees or foliage.
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            Umbrageous grots and caves
            Of cool recess, o'er which the mantling vine
            Lays forth her purple grape.          --Milton.
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   2. Not easily perceived, as if from being darkened or shaded;
      obscure. [Obs.] --Sir H. Wotton.
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   3. Feeling jealousy or umbrage; taking, or disposed to take,
      umbrage; suspicious. [Obs.] --Bp. Warburton. --
      Um*bra"geous*ly, adv. -- Um*bra"geous*ness, n.
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