grue ‧ some /ˈɡruːs ə m/ BrE AmE adjective
[ Date: 1500-1600 ; Origin: grue 'to shake (with fear)' (14-19 centuries) , from Middle Dutch gruwen ]
very unpleasant or shocking, and involving someone being killed or badly injured:
Police described it as a particularly gruesome attack.
Spare me the gruesome details.
—gruesomely adverb