a. [ L. exasperatus, p. p. of exsasperare to roughen, exasperate; ex out (intens.) + asperare to make rough, asper rough. See Asperity. ] Exasperated; imbittered. [ Obs. ] Shak. [ 1913 Webster ]

Like swallows which the exasperate dying year
Sets spinning. Mrs. Browning. [ 1913 Webster ]

v. t. [ imp. & p. p. Exsasperated p. pr. & vb. n. Exasperating ] 1. To irritate in a high degree; to provoke; to enrage; to excite or to inflame the anger of; as, to exasperate a person or his feelings. [ 1913 Webster ]

To exsasperate them against the king of France. Addison. [ 1913 Webster ]

2. To make grievous, or more grievous or malignant; to aggravate; to imbitter; as, to exasperate enmity. [ 1913 Webster ]

To exasperate the ways of death. Sir T. Browne.

Syn. -- To irritate; provoke. See Irritate. [ 1913 Webster ]

n. One who exasperates or inflames anger, enmity, or violence. [ 1913 Webster ]

adj. 1. extremely annoying or displeasing.
Syn. -- annoying, infuriating, maddening, vexing. [ WordNet 1.5 ]

2. same as exacerbating.
Syn. -- aggravating, exacerbating. [ WordNet 1.5 ]

n. [ L. exasperatio: cf. F. exaspération. ] 1. The act of exasperating or the state of being exasperated; irritation; keen or bitter anger. [ 1913 Webster ]

Extorted from him by the exasperation of his spirits. South. [ 1913 Webster ]

2. Increase of violence or malignity; aggravation; exacerbation. “Exasperation of the fits.” Sir H. Wotton. [ 1913 Webster ]