Unacceptable

Origin

- + acceptable

Full definition of unacceptable

Adjective

1. unsatisfactory; not acceptable
• 2011, December 16, Denis Campbell, Hospital staff 'lack skills to cope with dementia patients', "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."
2. (linguistics) not conforming to accepted usage

Synonyms

• inacceptable less common

Antonyms

• acceptable