- impossible to understand or explain无法理解的；难以解释的 synonym inexplicable
- There has been an unaccountable increase in cases of the disease.疾病病例的增加没有说明。
- For some unaccountable reason, the letter never arrived.不知何故，那封信始终未寄到。🔊🔊
- unaccountable (to somebody/something) not having to explain or give reasons for your actions to anyone无须解释（或说明）的；不负责的
- Too many government departments are unaccountable to the general public.有太多的政府部门不对社会大众负责。🔊🔊
opposite accountable