EXASPERATE

I. transitive verb (-ated; -ating) see: asperity Date: 1534 1. to excite the anger of ; enrage , to cause irritation or annoyance to, to make more grievous ; aggravate , see: irritate ~dly adverb exasperatingly adverb II. adjective Date: 1541 irritated or annoyed especially to the point of injudicious action ; ~d, roughened with irregular prickles or elevations