空口无凭

Explanation: But not alone your mouth and say what the credentials. As long as in kind to prove. 　　Usage: Complex sentence; as predicate, object, complement; describe the non-empty by no vernacular, according to the 　　Source: Qing Li Baojia "Bureaucrats" 27 back: "not by empty words, pupil teacher who did not dare move." 　　Examples: You say these things, ~, I can not believe it. Thesaurus:  Bosh With no, oral expressions can not be taken as evidence Antonym Group:  This legislation appeal, file conserve contract for to be interrogate