From Longman Dictionary of Contemporary Englishbeggar description/beliefbeggar description/beliefIMPOSSIBLEif something beggars description or belief, it is impossible to describe or believe it They showed a lack of common sense that beggars belief. → beggar
Examples from the Corpus
beggar description/belief• Harry, that awful, awful singing beggars belief.• In Gravity's Rainbow, conspiracies proliferate to such an extent that they beggar description.• The initial radio message had beggared belief.• The thought of la belle dame de Bruges coming out with such stuff beggars belief.• The waste, deaths, brutality and destruction of property beggar description.• What she found there still beggars belief. 