/ ɪnˈtɒlərəbl; NAmE -ˈtɑːl-/ adjective
so bad or difficult that you cannot tolerate it; completely unacceptable
SYN unbearable :
an intolerable burden / situation
The heat was intolerable.
► in·toler·ably / -əbli; NAmE / adverb :
intolerably hot
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WORD ORIGIN
late Middle English : from Old French , or from Latin intolerabilis , from in- not + tolerabilis (from tolerare ).