/ ɪgˈzæspəreɪt; NAmE ; BrE also -ˈzɑːsp-/ verb
[ vn ] to annoy or irritate sb very much
SYN infuriate
► ex·as·per·ation / ɪgˌzæspəˈreɪʃn; NAmE ; BrE also -ˈzɑːsp-/ noun [ U ]:
He shook his head in exasperation.
a groan / look / sigh of exasperation
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WORD ORIGIN
mid 16th cent.: from Latin exasperat- irritated to anger, from the verb exasperare (based on asper rough).