adj.無(wú)法解釋的；不能理解的；不負(fù)責(zé)任的

I have an unaccountable dislike to my dentist. 我對(duì)牙醫(yī)有種無(wú)法解釋的厭惡。

His mistake is quite unaccountable. 他的錯(cuò)誤相當(dāng)令人費(fèi)解。

An insane person is unaccountable for his actions. 精神病患者對(duì)其行為不負(fù)任何責(zé)任。