unbeknown

adj

Etymology: Etymology tree English un- Proto-Indo-European *h₁ep-der. Proto-Indo-European *h₁épsder. Proto-Indo-European *h₁epider. Proto-Indo-European *h₁pi Proto-Germanic *bider. Proto-Germanic *bi- Proto-West Germanic *bi- Old English be- Middle English bi- English be- English known English beknown English unbeknown From un- + beknown.

1. Not beknown.

   “Following the debate in question, Tim Loughton sent an unmarked copy of Hansard to his constituent to inform him that he would no longer be acting as his MP as the constituent had made this position untenable. [...] However, and unbeknown to Loughton, the constituent reported the debate to the police as a 'hate crime' and complained that sending a copy of Hansard was 'harassment'.”