/ig zas'peuh ray"sheuhn/ , n.
1. an act or instance of exasperating; provocation.
2. the state of being exasperated; irritation; extreme annoyance: Her exasperation at being interrupted was understandable.
[ 1540-50; exasperation- (s. of exasperatio ) roughness, bitterness. See EXASPERATE, -ION ]