/ ɪnˈsʌfrəbl; NAmE / adjective
extremely annoying, unpleasant and difficult to bear
SYN unbearable
► in·suf·fer·ably / -əbli; NAmE / adverb :
insufferably hot
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WORD ORIGIN
late Middle English : perhaps via French (now dialect) insouffrable , based on Latin sufferre endure ( from sub- from below + ferre to bear).