unacceptable

comparative more unacceptable · superlative most unacceptable

1. Unsatisfactory; not acceptable.

   The British Transport Commission (BTC) was created to own not just the railways, but also London Underground, docks, inland waterways, and some road haulage activities. Its remit was to operate on a break-even basis, with sustained losses unacceptable.

   2023 March 8, David Clough, “The long road that led to Beeching”, in RAIL, number 978, page 38

   1 more example

   "This shocking report proves once again that we urgently need a radical shake-up of hospital care," said Jeremy Hughes, chief executive of the Alzheimer's Society. "Given that people with dementia occupy a quarter of hospital beds and that many leave in worse health than when they were admitted, it is unacceptable that training in dementia care is not the norm."

   2011 December 16, Denis Campbell, “Hospital staff 'lack skills to cope with dementia patients'”, in The Guardian, archived from the original on 31 May 2022

2. human sciencesNot conforming to accepted usage.

plural unacceptables

1. Something that is not acceptable.

   Second, the data collected using CASEMAP afford us the opportunity to conduct market segmentation analyses based on the similarity in the pattern of unacceptables and/or the benefits that consumers seek in the category.

   1989, Walter A. Henry, Michael Menasco, Hirokazu Takada, New-product Development and Testing, page 106