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. [ 1913 Webster ]

Umbrageous grots and caves
Of cool recess, o'er which the mantling vine
Lays forth her purple grape. Milton. [ 1913 Webster ]

2. Not easily perceived, as if from being darkened or shaded; obscure. [ Obs. ] Sir H. Wotton. [ 1913 Webster ]

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. [ 1913 Webster ]