INCONSOLABLE

in ‧ con ‧ so ‧ la ‧ ble /ˌɪnkənˈsəʊləb ə l◂ $ -ˈsoʊ-/ BrE AmE adjective

so sad that it is impossible for anyone to comfort you:

The boy was inconsolable after the death of his dog.

—inconsolably adverb :

She wept inconsolably.