American English

Definition of unaccountable adjective from the Oxford Advanced American Dictionary



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  1. 1impossible to understand or explain synonym inexplicable There has been an unaccountable increase in cases of the disease. For some unaccountable reason, the letter never arrived.
  2. 2unaccountable (to somebody/something) not having to explain or give reasons for your actions to anyone Too many government departments are unaccountable to the general public. opposite accountable
See the Oxford Advanced Learner's Dictionary entry: unaccountable