ac·ri·mo·ny \ˈakrəˌmōnē, -ni, US also & Brit usually -_mən-\noun (-es) Etymology: Middle French or Latin; Middle French acrimonie, from Latin acrimonia, from acr-, acer sharp — more at edge 1.archaic: bitterness or sharpness especially to the taste 2.: sharpness or rancor especially in words or manner < timeworn controversies … are apt to revive … with an acrimony undimmed by age — Times Literary Supplement >