adjective If you say that someone or something is insufferable, you are emphasizing that they are very unpleasant or annoying. [formal, emphasis] ⇒ He was an insufferable bore. insufferably (ɪnsʌfrəbli
) adverb [ADV adj] ⇒ His letters are insufferably dull. ⇒ He found most of them insufferably arrogant.
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