Correct spelling for UNEXCEPTABLE excitable, inexpiable, acceptable, unacceptably, unexceptionable, unacceptable, Unexceptionably. Click to see full answer. Then, what does Unexceptable mean?Definition of unacceptable. : not acceptable : not pleasing or welcome.Secondly, what is the mean of spelling? Spelling is defined as the proper way to write a word, using the correct order of letters. An example of spelling is the spelling of the word “cat” as “C” “A” “T.” An example of spelling is when you actually say or write the letters of the word “cat.” Also question is, is Unexpectable a word? unexpectable. Unusual, or unpredictable. Not expected. In these difficult times unexpectable events can take everyone by surprise.What is the synonym of unacceptable?SYNONYMS. intolerable, insufferable, unsatisfactory, impermissible, inadmissible, inappropriate, unsuitable, undesirable, unreasonable, objectionable, insupportable. offensive, obnoxious, disagreeable, disgraceful, deplorable, terrible, distasteful, displeasing, improper, unseemly, beyond the pale, bad, poor.