\Un*gen"tle\, a. Not gentle; lacking good breeding or delicacy; harsh. Vicious, ungentle, foolish, blunt, unkind. --Shak. That ungentle flavor which distinguishes nearly all our native and uncultivated grapes. --Hawthorne. -- {Un*gen"tle*ness}, n. -- {Un*gen"tly}, adv.