Collins COBUILD Advanced Learner's English Dictionary - unaccountable

1. Something that is unaccountable does not seem to have any sensible explanation. For some unaccountable reason, it struck me as extremely funny... = inexplicable ADJ: usu ADJ n • unaccountably And then, unaccountably, she giggled... ADV 2. If you describe a person or organization as unaccountable, you are critical of them because they are not responsible to anyone for their actions, or do not feel they have to explain their actions to anyone. Economic policy in Europe should not be run by an unaccountable committee of governors of central banks. ADJ c darkgreen]disapproval UNACCOUNTABLY see unaccountable