无征不信 wúzhēngbùxìn not credible without proof Origin Definitions Defs Strokes Stroke Words Sentences Sents 无 無 wú adjectiveverb to not have to not have; there is no; lack; (as prefix) non-; un-; -less征 徵 zhēng to prove (literary) To verify or use as evidence; to prove.不信 bùxìn verb to not believe To lack faith in someone or something; to disbelieve or be skeptical of a claim.