indecipherable

Từ điển Oxford Advanced Learner 8th

in·de·cipher·able [indecipherable] BrE [ˌɪndɪˈsaɪfrəbl] NAmE [ˌɪndɪˈsaɪfrəbl] adjective
(of writing or speech)impossible to read or understand
•His signature is indecipherable.
•There was an indecipherable message on the answering machine.

• Từ đồng nghĩa / Synonyms:
  unclear, undecipherable, unreadable