inexplicable
/ˌɪn.ɪkˈsplɪ.kə.bl̩/ noun C2- Something that is impossible to explain.
Plural inexplicables
From the library
Setting aside the whole grim story of Sir Charles’s death, we had a line of inexplicable incidents all within the limits of two days, which included the receipt of the printed letter, the black-bearded spy in the hansom, the loss of the new brown boot, the loss of the old black boot, and now the return of the new brown boot.
It is, as I gather from your original remarks, an inexplicable, or at least an unexplained, murder.
The apartment destined for the purpose was spacious and lighted by a number of windows, over each of which was written in golden letters for some inexplicable reason the name of one of the principal cities of France; beneath these windows a wooden balcony extended the entire length of the house.
“Every inquiry in this case reveals something inexplicable.
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