Definition of indecipherable adjective from the Oxford Advanced American Dictionary

 

indecipherable

 adjective
adjective
NAmE//ˌɪndɪˈsaɪfərəbl//
 
 
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(of writing or speech) impossible to read or understand His signature is indecipherable. There was an indecipherable message on my voice mail.
See the Oxford Advanced Learner's Dictionary entry: indecipherable