unacceptably adv 1: to an unacceptable degree; "The percentage of lead in our drinking water is unacceptably high" [syn: {unacceptably}, {intolerably}] [ant: {acceptably}, {so- so}, {tolerably}]
Unacceptable \Un`ac*cept"a*ble\, a. Not acceptable; not pleasing; not welcome; unpleasant; disagreeable; displeasing; offensive. -- {Un`ac*cept"a*ble*ness}, n. -- {Un`ac*cept"a*bly}, adv. [1913 Webster]