Two articles (one French, another English) on board but such that they can’t be consumed (9)
I believe the answer is:
uneatable
But I can't explain it at all! Could you help me understand?
(Other definitions for uneatable that I've seen before include "not fit for consumption" , "disgusting when dining" , "Can't be kept down" , "pursued unspeakably?" , "can't be taken in!" .)