Synonyms of the word 
UNACCEPTED → NONSTANDARD - UNACCEPTABLE
unaccepted
- adj. Not accepted; unacceptable.
nonstandard
- adj. Not standard.
- adj. (linguistics) Not conforming to the language as used by the majority of its speakers.
- n. Something that is not standard.
unacceptable
- adj. unsatisfactory; not acceptable.
- adj. (linguistics) not conforming to accepted usage.
- n. Something that is not acceptable.
If you are interested in words, visit the following sites :
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- 1word.ws/unaccepted to play with words, suffixs, prefixs, etc.