Tom normalde çok güvenilirdi ve onun toplantıya gelmemesinin nedeni açıklanamaz. - Tom was normally very reliable and his absence from the meeting was inexplicable.
Hayatın doğası açıklanamaz. - Life's nature is inexplicable.
If something is inexplicable, you cannot explain why it happens or why it is true. For some inexplicable reason, the investors decided to pull out. = incomprehensible + inexplicably in·ex·pli·cably She suddenly and inexplicably announced her retirement. too unusual or strange to be explained or understood = incomprehensible, strange strange