ex·ac·er·bate (ĭg-zās'ər-bāt') tr.v.
ex·ac·er·bat·ed, ex·ac·er·bat·ing, ex·ac·er·bates To increase the severity, violence, or bitterness of; aggravate: a speech that exacerbated racial tensions; a heavy rainfall that exacerbated the flood problems.
[Latin exacerbāre, exacerbāt- : ex-, intensive pref.; see ex- + acerbāre, to make harsh (from acerbus, harsh; see ak- in Indo-European roots).] ex·ac'er·ba'tion n.
1582, from L.L. exacerbationem (nom. exacerbatio), from L. exacerbare "exasperate, irritate," from ex- "thoroughly" + acerbus "harsh, bitter," from acer "sharp, keen" (see acrid).
Main Entry: ex·ac·er·bate Pronunciation: ig-'zas-&r-"bAt Function: transitive verb Inflected Forms: -bat·ed;-bat·ing : to cause (a disease or its symptoms) to become more severe exacerbated by lack of care> —ex·ac·er·ba·tion/-"zas-&r-'bA-sh&n/noun