'Unacceptably' definitions:

Definition of 'unacceptably'

From: WordNet
adverb
To an unacceptable degree; "The percentage of lead in our drinking water is unacceptably high" [syn: unacceptably, intolerably] [ant: acceptably, so- so, tolerably]

Definition of 'Unacceptably'

From: GCIDE
  • 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]