1. Not acceptable; not such as will be received with pleasure.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• unaccepptable,
• unacceptale,
• unacceptail,
• unaccectable,
• unaccepatble,
• unacceptible,
• unacceptabe,
• unnaccaptable,
• unaccetable,
• unaccetpable,
• unacceptabel,
• unaccepetable,
• unaxceptable,
• unaccpectable,
• inaceptable,
• unaccepible,
• uneceptable,
• unaceptable,
• unacceptalbe,
• anacceptable

• unaccepted,
• unacceptability,
• unacceptably,
• unexceptionable,
• unchewable,
• unachievable.

The adjective form of the word "unacceptable" is "unacceptable".

The plural form of the word "unacceptable" is "unacceptables." However, it is uncommon to use this term in the plural form.

The singular form of the word "unacceptable" is "unacceptable". The word does not change in form when used in the singular or plural form.