in ‧ tol ‧ e ‧ ra ‧ ble /ɪnˈtɒl ə rəb ə l $ -ˈtɑː-/ BrE AmE adjective
too difficult, bad, annoying etc for you to accept or deal with OPP tolerable :
‘This is intolerable!’ exclaimed Sir Rufus.
The pain had become intolerable.
intolerable burden/strain/pressure
Caring for an elderly relative can become an intolerable burden.
—intolerably adverb